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 0.100 mol の酢酸と 0.100 mol の酢酸ナトリウムを含む緩衝液 100 mL がある。この溶液に 0.0200 mol の水酸化ナトリウムを加...

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 0.100 mol の酢酸と 0.100 mol の酢酸ナトリウムを含む緩衝液 100 mL がある。この溶液に 0.0200 mol の水酸化ナトリウムを加えたときの pH を小数点以下2桁まで求めなさい。ただし,酢酸の pKa は4.75であり、溶液の活量係数は1.00としてよいとする。

There is a solution (100 mL) which contains acetic acid (0.100 mol) and sodium acetate (0.100 mol). To the solution, 0.0200 mol of sodium hydroxide was added. Answer the pH of the solution to the second decimal place. Acid constant of acetic acid is pKa = 4.75, and activity coefficient can be treated as 1.00.

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