The critical temperature of A. B. C. D gases are $190 \mathrm{~K}, 630$ $\mathrm{K}, 261 \mathrm{~K}, 400…

The critical temperature of A. B. C. D gases are $190 \mathrm{~K}, 630$ $\mathrm{K}, 261 \mathrm{~K}, 400 \mathrm{~K}$ respectively. The quantity of gas adsorbed per gram of charcoal at same pressure is least for the gas
  1. D
  2. C
  3. B
  4. A

Solution

According to the graph of Freundlich adsorption isotherm.
There curves indicate that at fixed pressure, there is a decrease in physical adsorption with increase in temperature. The extent of adsorption decreases with increase of temperature so, B > D > C > A A have least quantity of gas adsorbed per gram of charcoal.

Asked in: AP EAMCET 2024 (23 May Shift 1)

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