Phương trình phản ứng hóa học - NHÓM OXI – LƯU HUỲNH

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Phương trình phản ứng hóa học - NHÓM OXI – LƯU HUỲNH
* O
2
2Cu + 2H
2
SO
4
+ O
2
→ 2CuSO
4
+ 2H
2
O 2Cu
2
O + Cu
2
S → 6Cu + SO
2
↑
4FeS
2
+ 11O
2
→ 2Fe
2
O
3
+ 8SO
2

2Fe(OH)
2
+ 1/2O
2
+ H
2
O → 2Fe(OH)
3
H
2
S + ½ O
2
→ S + H
2
O
(trắng xanh) (nâu đỏ)
H
2
S + 3/2 O
2
→ SO
2
+ H
2
O 2Fe(OH)
2
+ ½ O
2
→ Fe
2

O
3
+ 2H
2
O
* H
2
O
2
, O
3
H
2
O
2
+ KNO
2
→ H
2
O + KNO
3
H
2
O
2
+ Ag
2
O → 2Ag + H
2
O + O

2
H
2
O
2
+ 2KI → I
2
+ 2KOH O
3
+ 2Ag → Ag
2
O + O
2
2KI + O
3
+ H
2
O → I
2
+ 2KOH + O
2
2KMnO
4
+ 5H
2
O
2
+ 3H
2
SO

4
→2MnSO
4
+ 5O
2
+ K
2
SO
4
+ 8H
2
O
* S
3S + 2KClO
3
→ 3SO
2
+ 2KCl S + 2H
2
SO
4
(đặc) → 3SO
2
+ 2H
2
O
S + 2H
2
SO
4

(đặc) → 3SO
2
↑ + 2H
2
O 3S + 6NaOH → 2Na
2
S + Na
2
SO
3
+ 3H
2
O
S + 2HNO
3
→ H
2
SO
4
+ 2NO S + 6HNO
3
→ H
2
SO
4
+ 6NO
2
+ 2H
2
O

* H
2
S
2NO + 2H
2
S → 2S ↓ + N
2
+ 2H
2
O H
2
S + 4Cl
2
+ 4H
2
O → H
2
SO
4
+ 8Cl
2
H
2
SO
3
+ 2H
2
S → 3S ↓ + 3H
2
O H

2
S + Cl
2
→ S ↓ + 2HCl
I
2
+ H
2
S → S ↓ + 2HI 2H
2
S + 2K → 2KHS + H
2
2H
2
S + SO
2
→ 3S + 2H
2
O 2H
2
S + 4Ag + O
2
→ 2Ag
2
S + 2H
2
O
H
2
S + 2FeCl

3
→ 2FeCl
2
+ 2HCl + S ↓ CuS, PbS + H
2
SO
4
: không phản ứng
H
2
S + H
2
SO
4
(đ) → SO
2
↑ + S ↓ + 2H
2
O H
2
S + CuSO
4
→ CuS ↓ + H
2
SO
4
2KMnO
4
+ 5H
2

S + 3H
2
SO
4
→ 2MnSO
4
+ 5S + K
2
SO
4
+ 8H
2
O
* SO
2
SO
2
+ NO
2
→ SO
3
+ NO SO
2
+ 2H
2
O + Cl
2
→ H
2
SO

4
+ 2HCl
SO
2
+ 2CO
,500
o
boxit C
→
2CO
2
+ S ↓
SO
2
+ 2H
2
O + Br
2
→ H
2
SO
4
+ 2HBr
SO
2
+ 2Mg → 2MgO + S ↓ SO
2
+ 2FeCl
3
+ 2H

2
O → 2FeCl
2
+ H
2
SO
4
+ 2HCl
SO
2
+ 6HI → 2H
2
O + H
2
S + 3I
2
5SO
2
+ 2KMnO
4
+ 2H
2
O → K
2
SO
4
+ 2MnSO
4
+ 2H
2

O
* SO
3
SO
3
+ 2KI → K
2
SO
3
+ I
2
3SO
3
+ 2NH
3
→ 3SO
2
+ N
2
↑ + 2H
2
O
* H
2
SO
3
H
2
SO
3

+ ½ O
2
→ H
2
SO
4
4K
2
SO
3
→ 3K
2
SO
4
+ K
2
S
H
2
SO
3
+ I
2
+ H
2
O → H
2
SO
4
+ 2HI NaHSO

3
+ NaClO → NaHSO
4
+ NaCl
H
2
SO
3
+ 2H
2
S → 3S + 3H
2
O
* H
2
SO
4
H
2
SO
4
(đ) + 8HI → 4I
2
+ H
2
S + 4H
2
O 2H
2
SO

4
+ C → 2SO
2
↑ + CO
2
↑ + 2H
2
O
H
2
SO
4
(đ) + 2HBr → Br
2
+ SO
2
+ 2H
2
O 2H
2
SO
4
+ S → 3SO
2
↑ + 2H
2
O
6H
2
SO

4
(đ,n) + 2Fe → Fe
2
(SO
4
)
3
+ 3SO
2
+ 6H
2
O 5H
2
SO
4
+ 2P → 2H
3
PO
4
+ 5SO
2
↑ + 2H
2
O
2H
2
SO
4
(đ) + Zn → ZnSO
4

+ SO
2
+ 2H
2
O 4H
2
SO
4
(đ,n) + 2FeO → Fe
2
(SO
4
)
3
+ SO
2
+ 4H
2
O
4H
2
SO
4
(đ) + 3Zn → 3ZnSO
4
+ S + 4H
2
O
4H
2

SO
4
(đ,n) + 2Fe(OH)
2
→Fe
2
(SO
4
)
3
+ SO
2
+ 6H
2
O
5H
2
SO
4
(đ) + 4Zn → 4ZnSO
4
+ H
2
S + 4H
2
O H
2
SO
4
(đ,n) + H

2
S → SO
2
+ S + 2H
2
O
2H
2
SO
4
(đ) + Cu → CuSO
4
+ SO
2
+ 2H
2
O
K
2
Cr
2
O
7
+ 12FeSO
4
+ 11H
2
SO
4
→ Cr

2
(SO
4
)
3
+ 6Fe
2
(SO
4
)
3
+ K
2
SO
4
+ S ↓ + 11H
2
O
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PHẦN I : BÀI TẬP SƠ ĐỒ, CHUỖI PHẢN ỨNG
a/ A + B → D ↑ (mùi trưng thối) D + E → A + G
A + O
2
→ E ↑ F + G → X
E + O
2

2 5
400
o

V O
C
→
F
E + G + Br
2
→ X + Y
X + K
2
SO
3
→ H + E ↑ + G
b/ A + B → C ↑ (mùi trứng thối) C + Cl
2
→ F + B
C + O
2
→ E ↑ + H
2
O Dd F + H → FeCl
2
+C ↑
B + O
2
→ E ↑ C + G → T ↓ (đen) + HNO
3
c/ A + C → D ↑ D + E → A ↓ + H
2
O
A + B → E ↑ D + KMnO

4
+ H
2
O → G + H + F
A + F → D ↑ + H
2
O E + KMnO
4
+ F → A ↓ + G + H + H
2
O
d/ FeS → H
2
S → Na
2
S → FeS → Fe
2
(SO
4
)
3
→ FeCl
3
→ Fe(OH)
3
e/ FeS
2
→ SO
2
→ S → H

2
S → SO
2
→ SO
3
→ SO
2
→ H
2
SO
4
→ BaSO
4
→ SO
2
→ NaHSO
3
f/ FeS → H
2
S → S → NO
2
; H
2
S → H
2
SO
4
→ CuSO
4
; H

2
S → SO
2
→ HBr
g/ X
2
O+
→
A
2
O+
→
B
2
H O+
→
C
1:2
→
D
1:1
→
BaSO
4
↓
C
,2:3Al+
→
E
1:3

→
BaSO
4
↓
h/ MnO
2
→ Cl
2
→ S → SO
2
→ H
2
SO
4
→ CO
2
→ K
2
CO
3
→ KNO
3
i/ NaCl → NaOH → NaCl → Cl
2
→ S → H
2
S → H
2
SO
4

→ S; Cl
2
→ FeCl
3
→ Fe
2
(SO
4
)
3
; FeCl
3
→ S
j/ KMnO
4
→ Cl
2
→ NaCl → Cl
2
→ FeCl
3
→ Fe
2
(SO
4
)
3
→ Fe(NO
3
)

3
H
2
SO
4
→ NaHSO
4
→ Na
2
SO
4
k/ Zn → ZnS → H
2
S → SO
2
→ H
2
SO
4
→ Fe
2
(SO
4
)
3
→ FeCl
3
SO
2
→ S → Al

2
S
3
l/ FeS
2
→ SO
2
→ SO
3
→ H
2
SO
4
→ SO
2
→ Na
2
SO
3
→ Na
2
SO
4
→ NaCl → NaNO
3
HBr → AgBr
m/ Ca(NO
3
)
2

→ CuS → Cu(NO
3
)
2
→ Cu(OH)
2
→ CuO → Cu → CuCl
2
n/ ZnS → H
2
S → S → SO
2
→ SO
3
→ H
2
SO
4
→ HCl → Cl
2
→ KClO
3
→ O
2
→ S → H
2
S → SO
2
→
Na

2
SO
3
→ Na
2
SO
4
→ NaCl → Cl
2

o/ ZnS→ SO
2
H
2
SO
4
→ Fe
2
(SO
4
)
3
→ Fe(OH)
3
→ Fe
2
O
3
→ Fe→FeS → FeSO
4

→Fe
2
(SO
4
)
3

H
2
S S



SO
2
KHSO
3
→ K
2
SO
3
→ K
2
SO
4
→ KOH → KClO

→ Cl
2
→ CaOCl

2
p/ FeS → H
2
S

→ SO
2
NaHSO
3
→ Na
2
SO
3
→ SO
2
H
2
SO
4
→ K
2
SO
4
→ KCl → KOH → KClO
3
→ O
2
→ S → ZnS → SO
2
→ SO

3
→ BaSO
4