Question

Give reasons :
The entropy of steam is more than that of water at its boiling point.

Answer 1

For water, $\Delta n=ms\Delta T$
$\Delta S=\frac{\Delta n}{T_b}$
For water steam
$\Delta S=on=mLv+ms\Delta T$
$\Delta S=m{L}_v+ms\Delta T$
hence, $\Delta S$ steam > $\Delta S$ water.

Also, the molecules in a liquid are more energetic than solid but less than gas which implies more disorders that is more entropy.