Assertion :For adsorption $Δ G, Δ H, Δ S$ all have negative values. Reason: Adsorption is a spontaneous exothermic process in which randomness decreases due to force of attraction between adsorbent and adsorbate.

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
For adsorption G, H, S all have negative values.
Adsorption is a spontaneous exothermic process (hence $Δ H$ is negative) in which randomness decreases due to force of attraction between adsorbent and adsorbate (hence, $Δ S$ is negative).
Due to this $Δ G = Δ H - T Δ S$ is negative.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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