Statement-I :- pH of pure water increases wit | vedclass

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(B) The auto-ionisation of water is an endothermic process: $H_2O(l) \rightleftharpoons H^+(aq) + OH^-(aq)$.According to Le Chatelier's principle,incr

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Statement $I$ is incorrect but Statement $II$ is correct.

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(B) The auto-ionisation of water is an endothermic process: $H_2O(l) \rightleftharpoons H^+(aq) + OH^-(aq)$.According to Le Chatelier's principle,increasing the temperature shifts the equilibrium to the right,which increases the degree of ionisation of water.Consequently,the concentration of $[H^+]$ ions increases,which leads to a decrease in the $pH$ value of pure water (since $pH = -\log[H^+]$).Therefore,Statement-$I$ is incorrect and Statement-$II$ is correct.

Statement-$I$ :- $pH$ of pure water increases with increase in temperature.
Statement-$II$ :- Degree of ionisation increases with increase in temperature.

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Statement-$I$ :- $pH$ of pure water increases with increase in temperature.Statement-$II$ :- Degree of ionisation increases with increase in temperature.