BÁO cáo THÍ NGHIỆM hóa PHÂN TÍCH PHƯƠNG PHÁP CHUẨN độ ACID BASE PHA DUNG DỊCH CHUẨN ACID OXALIC xác ĐỊNH NỒNG độ DUNG DỊCH NaOH và DUNG DỊCH H3PO4

TRƯỜNG ĐẠI HỌC SƯ PHẠM KĨ THUẬT TP.HCM
KHOA CÔNG NGHỆ HĨA HỌC & THỰC PHẨM
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BÁO CÁO THÍ NGHIỆM
HĨA PHÂN TÍCH
Họ và tên:
GVHD: Nguyễn Quốc Thắng
NHÓM:
LỚP: 19116CL2A ( Thứ 6 t1-t5 )
THÀNH VIÊN:

TP. HỒ CHÍ MINH – 10/2020


THỜI GIAN:

BUỔI:

THỨ:

BÁO CÁO THÍ NGHIỆM BÀI 3
PHƯƠNG PHÁP CHUẨN ĐỘ ACID - BASE
PHA DUNG DỊCH CHUẨN ACID OXALIC
XÁC ĐỊNH NỒNG ĐỘ DUNG DỊCH NaOH VÀ DUNG DỊCH H3PO4
I. NGUYÊN TẮC VÀ CÁCH TIẾN HÀNH
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------II. KẾT QUẢ THÍ NGHIỆM
TN1.Pha dung dịch chuẩn H2C2O4 0,1N từ tinh thể H2C2O4.2H2O
- Số gam H2C2O4.2H2O (chất gốc) cần lấy để pha 100,0 mL dung dịch H2C2O4 0,1000N.
mtheo. =-------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------


- Cân chính xác khối lượng H2C2O4.2H2O, mrel. = ------------------------------------------------- Nồng độ thực của H2C2O4 (khoảng tin cậy ±ɛ0,95%) : -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN2. Pha dung dịch NaOH gần đúng 0,1N. Xác định lại nồng độ

TN2.1 Pha dung dịch NaOH
Số gam NaOH cần lấy để pha 250 mL dung dịch NaOH  0,1N là: --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN2.2. Xác định nồng độ dung dịch NaOH
NaOH

H2C2O4

Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
Biểu diễn CN của NaOH kèm theo ε0.95
CN = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

μ = ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Biểu diễn nồng độ NaOH dưới dạng: CM, TNaOH, TH2C2O4/NaOH
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN3. Xác định nồng độ dung dịch H3PO4
TN3.1. Chuẩn độ với chỉ thị metyl da cam
CN của NaOH là:
NaOH

H3PO4

Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
Biểu diễn CM của H3PO4 kèm theo ε0.95
CM = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN3.2. Chuẩn độ với chỉ thị phenolphtalein
NaOH
Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình

H3PO4


Biểu diễn CM của H3PO4 kèm theo ε0.95
CM =---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------III. ĐÁNH GIÁ KẾT QUẢ
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IV. CÂU HỎI VÀ BÀI TẬP
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Chữ ký GVHD
THỜI GIAN:

BUỔI:

THỨ:

BÁO CÁO THÍ NGHIỆM BÀI 4
PHA DUNG DỊCH CHUẨN Na2CO3, XÁC ĐỊNH ĐỘ CHUẨN DUNG DỊCH
HCl, XÁC ĐỊNH NaOH VÀ Na2CO3 TRONG HỖN HỢP
I.NGUYÊN TẮC VÀ CÁCH TIẾN HÀNH
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------II. KẾT QUẢ THÍ NGHIỆM
TN1. Pha dung dịch chuẩn Na2CO3 0,1000 N từ muối rắn Na2CO3 (M=105,99 g/mol)
- Số gam Na2CO3 (chất gốc) cần lấy để pha 50,00 mL dung dịch Na2CO3 0,1000N.
mtheo. =-------------------------------------------------------------------------------------------------

- Cân chính xác khối lượng Na2CO3, mrel. =-------------------------------------------------------- Nồng độ thực của Na2CO3 (khoảng tin cậy ± ɛ0,95%) : ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN2. Pha dung dịch HCl gần đúng 0,1N và xác định lại nồng độ

TN2.1 Pha dung dịch HCl gần đúng 0,1N
- Thể tích HCl đậm đặc cần lấy để pha 250,0 mL dung dịch HCl  0,1N là: ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN2.2. Xác định nồng độ dung dịch HCl
HCl
Dụng cụ

σ
Lần 1
Lần 2
Lần 3
Trung bình
SV
Biểu diễn CN của HCl kèm theo ε0.95

Na2B4O7


CN = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN3. Xác định nồng độ dung dịch hỗn hợp NaOH + Na2CO3
HCl (phenolphtalein)

HCl (metyl da cam)

NaOH + Na2CO3

Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
SV
Biểu diễn CM của NaOH kèm theo ε0.95
CM = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Biểu diễn CM của Na2CO3 kèm theo ε0.95
CM = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------III. ĐÁNH GIÁ KẾT QUẢ

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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IV. CÂU HỎI VÀ BÀI TẬP
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Chữ ký GVHD


THỜI GIAN:

BUỔI:

THỨ:

BÁO CÁO THÍ NGHIỆM BÀI 5
PHƯƠNG PHÁP CHUẨN ĐỘ PEMANGANATE, XÁC ĐỊNH ĐỘ CHUẨN
CỦA DUNG DỊCH KMnO4 BẰNG H2C2O4
XÁC ĐỊNH HÀM LƯỢNG Fe2+ BẰNG DUNG DỊCH KMNO4
I. NGUYÊN TẮC VÀ CÁCH TIẾN HÀNH
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------II. KẾT QUẢ THÍ NGHIỆM
TN1. Pha dung dịch KMnO4 và xác định nồng độ KMnO4


TN1.1. Pha dung dịch KMnO4
- Số gam KMnO4 cần lấy để pha 100,00 mL dung dịch KMnO4 0,1N.

mtheo. =-------------------------------------------------------------------------------------------------

- Cân chính xác khối lượng KMnO4, mrel. = ------------------------------------------------------- Nồng độ KMnO4------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN1.2. Xác định nồng độ KMnO4 bằng dung dịch chuẩn H2C2O4
KMnO4

H2C2O4

Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
SV
a) Biểu diễn CN của KMnO4 kèm theo ε0.95
CN = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------b) Tính nồng độ KMnO4: CM, TKMnO4 , TH2C2O4/KMnO4
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN2. Xác định hàm lượng Fe2+ trong muối Mohr bằng dung dịch KMnO4


KMnO4

Fe2+

Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
SV

Biểu diễn hàm lượng của Fe2+ kèm theo ε0.95 (biết MFe = 55.85)
Tính hàm lượng Fe2+ ra g/l và tính nồng độ chuẩn của KMnO4 theo sắt (tức là tìm xem
1mL dung dịch KMnO4 có thể oxy hóa bao nhiêu gam Fe2+)
Hàm lượng Fe = -----------------------------------------------------------------------------------ε0.95 =--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TKMnO4/Fe2+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------III. ĐÁNH GIÁ KẾT QUẢ
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---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IV. CÂU HỎI VÀ BÀI TẬP
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---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Chữ ký GVHD
THỜI GIAN:

BUỔI:

THỨ:

BÁO CÁO THÍ NGHIỆM BÀI 6
PHƯƠNG PHÁP CHUẨN ĐỘ IOD
PHA DUNG DỊCH CHUẨN Na2S2O3
XÁC ĐỊNH ĐỘ CHUẨN DUNG DỊCH Na2S2O3, ĐỊNH LƯỢNG H2O2
I. NGUYÊN TẮC VÀ CÁCH TIẾN HÀNH
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------II. KẾT QUẢ THÍ NGHIỆM
TN1. Pha dung dịch Na2S2O3 và xác định nồng độ Na2S2O3
TN1.1. Pha dung dịch Na2S2O3
- Số gam Na2S2O3.5H2O cần lấy để pha 100,00 mL dung dịch Na2S2O3 0,1 N
mtheo. =-------------------------------------------------------------------------------------------------

- Cân chính xác khối lượng Na2S2O3.5H2O, mrel. = ------------------------------------------------ Nồng độ Na2S2O3 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TN1.2. Xác định nồng độ dung dịch Na2S2O3 bằng DD chuẩn K2Cr2O7 0,1000 N
Na2S2O3
Dụng cụ
σ
Lần 1
Lần 2
Lần 3
Trung bình
SV

K2Cr2O7


Biểu diễn CN của Na2S2O3 kèm theo ε0.95
CN = --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------2. Xác định nồng độ dung dịch H2O2
CN của Na2S2O3 là:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Na2S2O3

H2O2

Dụng cụ

σ
Lần 1
Lần 2
Lần 3
Trung bình
SV
Biểu diễn nồng độ H2O2 kèm theo ε0.95
CN =---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ε0.95 = ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------μ = ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------III. ĐÁNH GIÁ KẾT QUẢ
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