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Hòa tan 8 gam NaOH (M= 40) vào nước thành một lít dung dịch ở nhiệt độ 25oC có tỉ khối d=1,08 g/ml. Tính nồng độ mol/l (CM), nồng độ % (C%) dung dịch NaOH trên. b. Tính pH của các dung dịch sau: NaOH 0,2M; HCl 0,05M và CH3COOH có nồng độ 0,6 M. Biết hằng số điện ly của dung dịch CH3COOH là Ka = 1,86.10-5
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Hòa tan 8 gam NaOH (M= 40) vào nước thành một lít dung dịch ở nhiệt độ 25oC có tỉ khối d=1,08 g/ml....
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