COMEDK · Chemistry · 20. Surface Chemistry
Which of the following is not true?
- A Enthalpy change in negative for adsorption of a gas on solid.
- B Increase in temperature favours adsorption.
- C Adsorption is a surface phenomena.
- D Entropy change is negative.
Answer & Solution
Correct Answer
(B) Increase in temperature favours adsorption.
Step-by-step Solution
Detailed explanation
Adsorption is a spontaneous process where gas molecules accumulate on the surface of a solid. Since it is a spontaneous process, the Gibbs free energy change \(\Delta G\) must be negative. The relationship is given by \(\Delta G = \Delta H - T\Delta S\). Adsorption involves the…
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