Question

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Answer 1

It is the  fourth option, Since adsorption is an exothermic process, ΔH is negative. Since the adhering of gas molecules to the surface lowers the randomness, the ΔS is negative.

These conditions happen because, Adsorption is accompanied by decrease in the free energy of the system as it is a spontaneous process

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Answer 2

Answer:

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d) is your correct answer

I think it's helps you

As the values of ΔS and ΔH are negative the value of ΔG will also be negative. Hence, the statement of assertion which states for adsorption ΔG,ΔS and ΔH all have negative values is the correct statement. -The exothermic reactions are spontaneous hence, adsorption is a spontaneous reaction.