The volumes of gases , , and adsorbed by 1 g of charcoal at 288 K are in the order — Surface Chemistry Chemistry Question
Question
The volumes of gases $H_2$, $CH_4$, $CO_2$ and $NH_3$ adsorbed by 1 g of charcoal at 288 K are in the order
Answer: D
💡 Solution & Explanation
The extent of physisorption is directly ∝ critical temperature. Order of Tc: $NH_3$ (406 K) > $CO_2$ (304 K) > $CH_4$ (191 K) > $H_2$ (33 K), giving adsorption order: $NH_3$ > $CO_2$ > $CH_4$ > $H_2$.
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