Question

For the process $A\left(1,0.05 \,atm , 32^{\circ} C \right) \rightarrow A \left(g, 0.05 \,atm , 32^{\circ} C \right)$
The correct set of thermodynamic parameters is

• A. $\Delta G = 0 $ and $S\Delta = - ve $
• B. $\Delta G = 0 $ and $S \Delta = + ve $
• C. $\Delta G = +ve $ and $S\Delta = 0 $
• D. $\Delta G = - ve $ and $S\Delta = 0 $
• E. $\Delta G = 0 $ and $S\Delta = 0 $

Answer 1

Answer: (B)

(i) $\because n$ and $T$ are constant.

$\therefore \Delta G =0$ i.e.

System is equilibrium

(ii) $\because P \rightarrow$ decreases

$\therefore \Delta S \rightarrow$ increases i.e. $(+) ve$

$\therefore $ Correct answer is $\rightarrow (B)$