What is the pH of a buffer system that contains 0.240 M hydrocyanic acid (HCN) and 0.330 M sodium cyanide (NaCN)? ?
The pKa of hydrocyanic acid is 9.31.
- 2 months ago
HCN is a weak acid with a pKa as you said of 9.31.
HCN<----> H+ + CN-
as you can tell the base salt dominates a bit.
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