Is the dissociation of water endothermic?

1 Answer
anor277
Oct 31, 2015

Are you making bonds or breaking bonds? You are breaking bonds; therefore this dissociation is clearly endothermic.

Explanation:

#H_2O rightleftharpoons H^(+) + OH^(-)#

This reaction requires the breaking of strong #O-H# bonds; therefore, it should be strongly endothermic. Is this proposition consistent with the equilibrium constant for the reaction above? Why or why not?

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