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zenkykg003
2 năm trước
Mọi người giúp em câu này với ạ: a) Tính pH của dung dịch đệm chứa CH3COOH 0,1M và CH3COONa 0,1M và biết pKa (CH3COOH) = 4,75. b). Nếu thêm 10^-2 mol HCl vào 1l dung dịch đệm trên thì pH sẽ thay đổi như thế nào? so sánh với trường hợp thêm 10^-2 mol HCl vào 1l nước cất?
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