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NEETChemistryIonic Equilibrium

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

Options

  1. ABoth assertion and reason are true, and the reason is the correct explanation for the assertion.
  2. BBoth assertion and reason are false.
  3. CBoth assertion and reason are true, but the reason is not the correct explanation for the assertion.
  4. DAssertion is not true, but reason is true.

Correct answer

B. Both assertion and reason are false.

Step-by-step solution

H 2 O ( l ) ⇌ H ( aq ) + + OH ( aq ) − For ionization of H 2 O: Δ H>O ⇒ Endothermic on temperature increase reaction shifts forward ⇒ both H + and H - increase ⇒ pH & pOH decreases.

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