Chemistry - Surface Chemistry Question with Solution | TestHub

Thermodynamics of adsorption:

i.$\mathrm{\Delta }\mathrm{S}<0$because gaseous phase decrease
ii.$\mathrm{\Delta }\mathrm{G}<0$because process is spontaneous
so$\mathrm{\Delta }\mathrm{G}=\mathrm{\Delta }\mathrm{H}-\mathrm{T}\mathrm{\Delta }\mathrm{S}$
$-\mathrm{v}\mathrm{e}=\mathrm{\Delta }\mathrm{H}-\left(+\mathrm{v}\mathrm{e}\right)\left(-\mathrm{v}\mathrm{e}\right)$
$\mathrm{\Delta }\mathrm{H}=-\mathrm{v}\mathrm{e}$
iii.$\mathrm{\Delta }\mathrm{H}<0$so adsorption is an exothermic process.