Assertion :Many endothermic reactions that are not spontaneous at room temperature become spontaneous at high temperature. Reason: Entropy of the system increases with increase in temperature.

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
As we know,
$Δ G = Δ H - T Δ S$
and free energy change should be negative for spontaneous reaction so
for endothermic reaction as temp. increases
$T Δ S > Δ H a n d Δ G = - v e$
So,
On increasing temperature, the endothermic reaction becomes spontaneous.

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