Chemistry - Surface Chemistry Question with Solution | TestHub

Adsorption is process where randomness decreases and energy is released. Hence,$\text{ΔS}$will be negative (as randomness is decreasing) and$\text{ΔH}$will also be negative ($\text{ΔH}$is negative for exothermic processes).
Depending on the values of Entropy and enthalpy, the Gibbs energy can either be negative or positive.