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Question: Answered & Verified by Expert
Adsorption of gases on solid surface is generally exothermic because
ChemistrySurface ChemistryNEET
Options:
  • A Enthalpy is positive
  • B Entropy decreases
  • C Entropy increases
  • D Free energy increases
Solution:
2432 Upvotes Verified Answer
The correct answer is: Entropy decreases
Adsorption of gases on solid surface is generally exothermic because entropy decreases, i.e. S is negative.

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