Chapter 5, Problem 5.45E

(a) At $\text{25}\text{.0°C}$, $K_{\text{w}}$ for the autoionization of water is $1.01\times {10}^{-14}$, while at $\text{100}\text{.0°C}$ it is $5.60\times {10}^{-13}$. What is $\Delta H°$ for the autoionization of water? (b) For ${\text{D}}_{\text{2}}\text{O}$, the values are $1.10\times {10}^{-15}$ and $7.67\times {10}^{-14}$, respectively. What is the $\Delta H°$ for the autoionization of ${\text{D}}_{\text{2}}\text{O}$?