Assertion :Heat of neutralization for HF is -68.552 kJ/eq. where as for HCl it is -57.26 kJ/eq. Reason: The acid HF is weak acid.

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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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The heat of neutralization for HF is -68.552 kJ/eq. whereas for HCl, it is -57.26 kJ/eq.
No doubt HF is weak acid but the higher values are due to extensive hydration of $F^{-}$ ion being smallest anion (only $H^{-}$ is smaller than $F^{-}$ )
The acid HF is a weak acid.
Hence, both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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