-p-Block elements - I — Chemistry STD 11 Science — Question

$(a)$ The vapour pressure of water at $280 K$ is $14.2$ $mm Hg$

$(b)$ $R =0.082 L$ atm $K ^{-1} mol ^{-1}$

$kJ\,mol ^{-1}$ (Nearest integer)

Given : $\Delta_{ dis } H _{ Cl _{2(g)}}^{\circ}=240\,kJ\,mol ^{-1}$.

$\Delta_{ eg } H _{ Cl _{(g)}}^{\circ}=-350\,kJ\,mol ^{-1}$,

$\Delta_{ hyd } H _{ Cl i _{( j )}^{\circ}}^{\circ}=-380\,kJ\,mol ^{-1}$