During the spontaneous adsorption of a gas on a solid surface, what are the strict thermodynamic sig — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Adsorption restricts gas molecule movement, decreasing entropy ($\Delta S < 0$). Spontaneous processes require $\Delta G < 0$. Since $\Delta G = \Delta H - T\Delta S$, the enthalpy change ($\Delta H$) must be sufficiently negative (exothermic) to overcome the entropy penalty.