Chemistry, asked by lydiajohnsonn34, 9 months ago

What ratio of NaCN to HCN is needed to prepare a pH 9.70 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)

Answers

Answered by sanketdhande88

Answer:

Explanation:

HCN (aq) + H2O (aq) ⇄ CN– (aq) + H3O+ (aq ); Ka = 4.9 x 10–10. 2 H2O (l) ... What percentage of a weak acid originally present ... prepare a buffer solution with pH = 4.10

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