A) Adsorption on solids is reversible
B) Adsorption increases with increase in temperature
C) Adsorption is spontaneous
D) Both enthalpy and entropy of adsorption are negative
Correct Answer: B
Solution :
As temperature increases desorption increases. Adsorbent \[+\] adsorbate \[\] Adsorbed state\[+\Delta E\] Adsorption is exothermic process (forward direction), desorption is endothermic process (backward direction). According to Le-Chatelier's principle increase in temperature favours endothermic process.
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