The adsorption of a gas at the boiling point | vedclass

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(A) At point $C$,the adsorption of the gas reaches saturation,meaning the amount of gas adsorbed remains constant regardless of any further increase i

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$\Delta H = T \Delta S, \Delta G = 0$

Vedclass · Answer

(A) At point $C$,the adsorption of the gas reaches saturation,meaning the amount of gas adsorbed remains constant regardless of any further increase in pressure.This indicates that the system has reached a state of equilibrium.For a system in equilibrium,the change in Gibbs free energy is zero,i.e.,$\Delta G = 0$.Using the thermodynamic relation $\Delta G = \Delta H - T \Delta S$,we substitute $\Delta G = 0$:$0 = \Delta H - T \Delta S$$	herefore \Delta H = T \Delta S$.

The adsorption of a gas at the boiling point of the gas follows the isotherm shown in the figure. Identify the correct thermodynamic properties at point $C$.

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