Chapter 16, Problem 57QAP

For the reaction

$2{\text{H}}_2\text{O}\left(l\right)+2{\text{Cl}}^{-}\left(aq\right)\to {\text{H}}_2\left(g\right)+{\text{Cl}}_2\left(g\right)+2{\text{OH}}^{-}\left(aq\right)$

(a) calculate ΔG° at 25°C.

(b) calculate ΔG° at 25°C when $P_{{\text{H}}_2}=P_{{\text{cl}}_2}=0.250$atm, $\left[{\text{Cl}}^{-}\right]=0.335M$, and the pH of the solution is 11.98.