Question

Calculate the enthalpy of desorption of carbon dioxide (CO2) from a surface if the surface coverage is 0.025 mol/m² and the temperature is 298 K. The enthalpy of adsorption for CO2 on the surface is -35.8 kJ/mol. The equilibrium constant (K) for the reaction is 2.99 x 10⁶ at 298 K.

Answer 1

To calculate the enthalpy of desorption of CO2 from the surface, we can use the following equation:H_desorption = -H_adsorptionGiven that the enthalpy of adsorption for CO2 on the surface is -35.8 kJ/mol, the enthalpy of desorption can be calculated as:H_desorption = - -35.8 kJ/mol  = 35.8 kJ/molSo, the enthalpy of desorption of CO2 from the surface is 35.8 kJ/mol.