Before revision: As it has the form of binomial series, the summation is reduced to where The grand canonical potential is based on which the average number of occupied sites is calculated which gives the coverage Now, invoking the condition that the system is in equilibrium, that is, the chemical potential of the adsorbed molecules is equal to that of the molecules in gas phase, we have frame |An example plot of the surface coverage θA = P/(P + P0) with respect to the partial pressure of the adsorbate.
After revision: As it has the form of binomial series, the summation is reduced to where The grand canonical potential is based on which the average number of occupied sites is calculated which gives the coverage Now, invoking the condition that the system is in equilibrium, that is, the chemical potential of the adsorbed molecules is equal to that of the molecules in gas phase, we have upright=2.2 |An example plot of the surface coverage θA = P/(P + P0) with respect to the partial pressure of the adsorbate.