TS EAMCET · Chemistry · Surface Chemistry
Which of the following is true for spontaneous adsorption of \(\mathrm{H}_2\) gas without dissociation on solid surface
- A Process is exothermic and \(\Delta S < 0\)
- B Process is endothermic and \(\Delta S>0\)
- C Process is exothermic and \(\Delta S>0\)
- D Process is endothermic and \(\Delta S < 0\)
Answer & Solution
Correct Answer
(A) Process is exothermic and \(\Delta S < 0\)
Step-by-step Solution
Detailed explanation
Adsorption of \(\mathrm{H}_2\) gas on solid surface is exothermic and entropy decreases in the process. \[ \therefore \Delta S < 0 \]
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