At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent __________________?
Correct answer: C. Decreases
- A. Increases
- B. Remains unchanged
- C. Decreases
- D. Increases exponentially
Explanation
Adsorption is usually exothermic, so increasing temperature promotes desorption and lowers the amount adsorbed at a fixed equilibrium pressure. The stated trend is for ordinary physical adsorption, which is the assumption in this question.
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