Question

For the following Assertion and Reason, the correct option is :
Assertion : The pH of water increases with increase in temperature.
Reason : The dissociation of water into $H^+$ and $OH^-$ is an exothermic reaction.

• A. Assertion is not true, but reason is true
• B. Both assertion and reason are true, and the reason is the correct explanation for the assertion
• C. Both assertion and reason are false
• D. Both assertion and reason are true, but the reason is not the correct explanation for the assertion

Answer 1

Answer: (C)

$H _{2} O \rightarrow H ^{+}+ OH ^{-}$
Dissociation of $H_{2} O$ is an endothermic reaction. On increasing temperature, $\left[H^{+}\right]$ion concentration increases. . pH decreases