Adsorption is accompanied by — Surface Chemistry Chemistry Question

💡 Solution & Explanation

During adsorption, the translational freedom of molecules decreases, resulting in a decrease in entropy (ΔS < 0). It is an exothermic process, so enthalpy decreases (ΔH < 0). It is a spontaneous process, so free energy decreases (ΔG < 0). The residual unbalanced forces on the surface are satisfied, which decreases the surface energy of the adsorbent. Therefore, correct answer is A,B,C,D.