Chapter 5, Problem 5.28E

Another nitrogen-oxygen reaction of some importance is

$2{\text{NO}}_{\text{2}}\left(g\right)+{\text{H}}_{\text{2}}\text{O}\left(g\right)\rightleftharpoons {\text{HNO}}_3\left(g\right)+{\text{HNO}}_{\text{2}}\left(g\right)$

which is thought to be the primary reaction involved in the production of acid rain. Determine ${\Delta }_{\text{rxn}}G°$ and $K$ for this reaction.