Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?

<p>During adsorption of a gas on solid surface, process is exothermic i.e. <span contenteditable="false"> <math> <mrow> <mi>Δ</mi> <mi>H</mi> <mo>=</mo> <mo>−</mo> <mi>v</mi> <mi>e</mi> <mrow> <mo> (</mo> <mrow> <mi>Δ</mi> <mi>H</mi> <mo>&lt;</mo> <mn>0</mn> </mrow> <mo>)</mo> </mrow> </mrow> </math> </span>&nbsp;and entropy decreased, because gas particle resides on solid surface. Hence <span contenteditable="false"> <math> <mrow> <mi>Δ</mi> <mi>S</mi> <mo>&lt;</mo> <mn>0</mn> <mo>.</mo> </mrow> </math> </span></p>

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