Chapter 8, Problem 8.36E

(a) What is the equilibrium constant for the following reaction?

${\text{H}}_{\text{2}}+{\text{2D}}^{+}\rightleftharpoons {\text{D}}_{\text{2}}+{\text{2H}}^{+}$

$E°$ for ${\text{2D}}^{+}+{\text{2e}}^{-}\to {\text{D}}_{\text{2}}$ is $0.044\text{V}$. (b) Based on you answer, which isotope of hydrogen prefers to be in the $+1$ state in aqueous solution?