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 an exothermic reaction

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 an exothermic reaction. + - 2 + - w w w

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

Prashant Kotian · Accepted Answer

Correct answer: C) BOTH ASSERTION AND REASON ARE TRUE AND THE REASON IS THE CORRECT EXPLANATION FOR THE ASSERTION.. H O ⇌ H + OH is an endothermic process. On increasing the temperature the value of K increases which will result in decrease in pK . So we can say that pH of water will decrease on increasing temperature because pH for water = pK .

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