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Standard XII

Chemistry

Ammonia

Assertion :Th...

Question

Assertion :The ionization constants of weak diprotic acid are in order of $K_{a_{1}} > K_{a_{2}}$ Reason: Removal of $H^{+}$ from anion is difficult as compared to neutral atom

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The ionization constants of weak diprotic acid are in order of $K_{a_{1}} > K_{a_{2}}$ due to more stability of conjugate base (lower charge density) and removal of $H^{+}$ from anion is difficult as compared to neutral atom.

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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Assertion :The ionization constants of weak diprotic acid are in order of Ka1>Ka2 Reason: Removal of H+ from anion is difficult as compared to neutral atom

Assertion :The ionization constants of weak diprotic acid are in order of $K_{a_{1}} > K_{a_{2}}$ Reason: Removal of $H^{+}$ from anion is difficult as compared to neutral atom