Chapter 18, Problem 136RQ

At $\text{25 °C}$, $\text{0}{\text{.0560 mol O}}_{\text{2}}\text{ and 0}{\text{.020 mol N}}_{\text{2}}\text{O}$ were placed in a 1.00 L container where the following equilibrium was then established.

${\text{2N}}_{\text{2}}\text{O}\left(g\right){\text{ + 3O}}_{\text{2}}\left(g\right)\stackrel{}{\rightleftharpoons }{\text{4NO}}_{\text{2}}\left(g\right)$

At equilibrium, the ${\text{NO}}_{\text{2}}$ concentration was 0.020 M. Calculate the value of $\Delta G°$ for the reaction.