# Chapter 14 - Acids and Bases - Exercises - Page 703: 47

a. The autoionization of water is endothermic. b. $[H^+]=[OH^-]=2.34*10^{-7}\text{ M}$

#### Work Step by Step

a. Because the reaction favors the right as we increase the temperature, the autoionization of water is endothermic. b. $[H^+]=[OH^-]=x$ in a neutral solution. Therefore, $[H^+][OH^-]=5.47*10^{-14}$ $x^2=5.47*10^{-14}$ $x=2.34*10^{-7}\text{ M}$ and ... $[H^+]=[OH^-]=2.34*10^{-7}\text{ M}$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.