73 Решение задачки по химии №07 381

54. Calculate the pH of buffer mixtures containing
1) equal volumes of 5% solutions of nitrous acid and its sodium salt,
2) 0.01 M HCN solution in the presence of 1.0 M KCN solution,
3) 0.02M solution of hypochlorous acid and 0.2M solution of its potassium salt.

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