Assertion :Decrease in free energy causes spontaneous reaction. Reason: Spontaneous reactions are invariably exothermic.

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 C Assertion is correct but Reason is incorrect
FOr decrease in free energy,
$Δ G < 0$ Hence the reaction will be spontaneous
Spontaneous reaction can be either exothermic or endothermic.
Hence, option C is correct

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Assertion :Decrease in free energy causes spontaneous reaction. Reason: Spontaneous reactions are invariably exothermic.

The correct option is C Assertion is correct but Reason is incorrectFOr decrease in free energy,ΔG<0 Hence the reaction will be spontaneousSpontaneous reaction can be either exothermic or endothermic.Hence, option C is correct

The correct option is C Assertion is correct but Reason is incorrect
FOr decrease in free energy,
$Δ G < 0$ Hence the reaction will be spontaneous
Spontaneous reaction can be either exothermic or endothermic.
Hence, option C is correct