QUESTION NO.3 [35 Marks] The following data of equilibrium partial pressure and volume adsorbed at STP were recorded for the physisorption of a gas (A₂) on a solid at three different temperatures: Volume Adsorbed (cm3/g) Equilibrium Pressure (Pa) V @T=30°C V @T = 60°C V @T = 120°C 0.12 19.73 9.63 3.148 0.21 23.59 11.70 3.916 0.31 26.43 13.26 4.520 0.48 29.69 15.10 5.261 a. Show that the above data fit the dissociative Langmuir isotherm and determine the adsorption equilibrium constant and the volume of monolayer at each of the above temperatures. Must provide all equations and all calculated values. b. Comment on your results of part a. c. Calculate the heat of adsorption. Clearly write all equations and show all calculations. [22 MARKS] [03 MARKS] [10 MARKS]