For the following Assertion and Reason, the correct option is: Assertion: The p H of water increases with…

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.
  1. Both assertion and reason are true, and the reason is the correct explanation for the assertion.
  2. Both assertion and reason are false.
  3. Both assertion and reason are true, but the reason is not the correct explanation for the assertion.
  4. Assertion is not true, but reason is true.

Solution

H2O(l)H(aq)++OH(aq)

For ionization of H 2 O:ΔH>O  Endothermic on temperature increase reaction shifts forward

both H + and H - increase

pH & pOH decreases.

Asked in: JEE Main 2020 (08 Jan Shift 2)

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