de kiem tra 1 tiet chuong i hoa hoc 11 96264

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Điểm

Kiểm tra 1 tiết- lớp 11 (lần 1)
Môn: Hóa học
Thời gian: 45 phút

Lời phê của cô giáo

Câu 1/ Trong y học, dược phẩm sữa magie ( các tinh thể Mg(OH)2 lơ lửng trong nước) là chất được dùng
để trịchứng khó tiêu do lượng dư axit HCl trong dạ dày. Phương trình hoá học ở dạng ion rút gọn đó dược
viết như thế nào?.
Câu 2/ Có 2 dung dịch sau: H2SO4 0,005M và NaOH 0,001M, giá trị pH lần lượt là bao nhiêu?
(giả sử dd H2SO4 → 2H+ + SO42-)
Câu 3/ Cho các chất sau: H2O, NaOH, HCl, NaCl, CH3COOH, CuSO4, Cu(OH)2, H3PO4, CH3COONa. Các
chất điện li yếu gồm những chất nào?
Câu 4/ Một dung dịch có [H+]=10-12M. Tính [OH-], và pH dung dịch. Dung dịch đó có môi trường gì? Hãy
cho biết màu của chất chỉ thị quỳ tím trong dung dịch này.
Câu 5/Trộn 300ml dung dịch HCl 0,01M với 200ml dung dịch NaOH 0,01M . Dung dịch thu được có pH
bằng bao nhiêu?
Câu 6/ Trong các dung dịch muối sau đây: K2CO3, KCl, CH3COONa, NH4Cl, Na2S, KHSO4 , Na2 HPO3 ,
Ca(HCO3)2 có bao nhiêu dung dịch thuộc muối trung hòa?
Câu 7/ Cho 10ml dung dịch HCl có pH=2. Cần thêm vào dung dịch trên bao nhiêu ml nước để sau khi
khuấy đều , thu được dung dịch có pH=4?
Câu 8/ Cho dung dịch chứa 2 gam Ba(OH)2 vào dung dịch chứa 2gam HCl. Dung dịch sau phản ứng có
môi trường gì? Vì sao?
Câu 9/ Phương trình ion rút gọn: 3H+ +Fe(OH)3 → Fe3+ +3H2O biểu diễn bản chất của phản ứng hóa học
nào? (Viết 2 phương trình phân tử để chứng minh)
Câu 10/ Cho 3,2 gam muối CuSO4 vào nước được 200ml dung dịch A. Tính nồng độ các ion trong dung
dịch A..Thể tích dung dịch KOH 0,5M để kết tủa vừa hết ion Cu2+ ?

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