Which one of the following characteristics is associated with adsorption?
ΔG and ΔH are negative but ΔS is positive.
ΔG and ΔS are negative but ΔH is positive.
ΔG is negative but ∆H and ΔS is positive.
ΔG, ΔH and ∆S all are negative
As the molecules of the adsorbate are held on the surface of the solid adsorbent, entropy decreases i.e.,∆S=-ve. As ΔG=ΔH-TΔSFor the adsorption to occur,
∆G=-ve and it is possible only if ∆H=-ve