Given the following,what will be the approximate equilibrium pH of an aqueous solution of ammonium cyanide,NH₄CN?
NH₄⁺
K_a = 5.69 x10^-10
HCN
K_a = 6.2 x10^-10

Question

Quizplus · Accepted Answer

The equilibrium pH of an aqueous solution of ammonium cyanide depends on the relative strengths of the acidic ammonium ion (NH4+) and the basic cyanide ion (CN-). Since the K_a values for NH4+ and HCN are very close, the solution will be slightly basic because CN- is a slightly stronger base than NH4+ is an acid.

Given the Following,what Will Be the Approximate Equilibrium PH of an Aqueous