Question

For the reaction $H_2O(l) \leftrightharpoons H_2O(g) $ at $373\, K$ and one atmospheric pressure

• A. $\Delta H=T \Delta S$
• B. $\Delta H= \Delta E$
• C. $\Delta H= \Delta 0$
• D. $\Delta E= \Delta 0$

Answer 1

Answer: (A)

$\Delta G=\Delta H-T \cdot \Delta S$

For the reaction,

$H _{2} O (l) \rightleftharpoons H _{2} O (g) $

$\Delta G=0\,\,\,\,\,$(at equilibrium)

$\therefore \,\,\,\,\Delta H=T \cdot \Delta S $