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Adsorption of a gas on the surface of so...

Adsorption of a gas on the surface of solid is generally accompanied by decrease in entropy. Still it is a spontaneous process. Explain.

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.A m:. Adsorption is an exotheimto process. .Delta H. is -ve. In the equation .Delta G=Delta H-T triangle S.. Entropy deereases implies .Delta S. is also -ve. .Delta H. is - .xe. But .Delta H>T triangle S. Hence .Delta G. is -ve. Hence the process is spontaneous.
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