The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

Question

Accepted Answer

Differential heat of adsorption. This process measures the heat released when a gas is adsorbed onto an adsorbent surface that already has some gas present. This specific measurement is called differential heat of adsorption.