Assertion: $p K_{a}$ of a weak acid becomes equal to the pH of the solution at the mid-point of titration.
Reason: The molar concentration of the proton donor and proton acceptor becomes equal at the mid-point.
Read the above assertion and reason and choose the correct option regarding it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$p H = p K_{a} + l o g \frac{[s a l t]}{[a c i d]}$
Therefore $p H = p K_{a}$ .
Reason is incorrect because at midpoint of titration of weak acid, [salt] = [Acid]
Option B is correct.

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Assertion: pKa of a weak acid becomes equal to the pH of the solution at the mid-point of titration.Reason: The molar concentration of the proton donor and proton acceptor becomes equal at the mid-point.Read the above assertion and reason and choose the correct option regarding it.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionpH=pKa+log[salt][acid]Therefore pH=pKa.Reason is incorrect because at midpoint of titration of weak acid, [salt] = [Acid]Option B is correct.

Assertion: $p K_{a}$ of a weak acid becomes equal to the pH of the solution at the mid-point of titration.
Reason: The molar concentration of the proton donor and proton acceptor becomes equal at the mid-point.
Read the above assertion and reason and choose the correct option regarding it.