Textbook Problem

The following reaction occurs in pure water:

${\text{H}}_{\text{2}}\text{O}\left(l\right)+{\text{H}}_{\text{2}}\text{O}\left(l\right)\to {\text{H}}_{\text{3}}{\text{O}}^{\text{+}}\left(aq\right)+{\text{OH}}^{\text{-}}\left(aq\right)$

which is often abbreviated as

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

For this reaction, ∆G° = 79.9 kJ/mol at 25°C. Calculate the value of ∆G for this reaction at 25°C when [OH⁻] = 0.15 M and [H⁺] = 0.71 M.