Assertion :Heat of neutralisation for both $H N O_{3}$ and $H C l$ with $N a O H$ is $53.7 k J p e r m o l^{- 1}$ Reason: $N a O H$ is a strong electrolyte/base.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The heat of neutralization for the strong acid and base is $53.7 k J / m o l$
Since, $H C l$ and $H N O_{3}$ are strong acids and $N a O H$ is a strong base, the heat of neutralization will be the same.
The reason given is not the explanation for the given statement.
Hence, option B is correct

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Assertion :Heat of neutralisation for both HNO3 and HCl with NaOH is 53.7kJpermol−1 Reason: NaOH is a strong electrolyte/base.

Assertion :Heat of neutralisation for both $H N O_{3}$ and $H C l$ with $N a O H$ is $53.7 k J p e r m o l^{- 1}$ Reason: $N a O H$ is a strong electrolyte/base.