Chemistry

Problem

If equilibrium constant

K_C

of the reaction:

2\text{Ag}(\text{s}) + 2\text{I}^- + 2\text{H}_2\text{O} \rightleftharpoons 2\text{AgI}(\text{s}) + \text{H}_2(\text{g}) + 2\text{OH}^-

1.2 \times 10^{-23}

(dimension less) at

25^\circ

. If concentrations of

\text{I}^-

at equilibrium is 0.10 and pressure of

\text{H}_2

gas at equilibrium is 60 kPa, calculate the pH of solution at equilibrium.