Propylene (propene; CH2CH=CH2) is used to produce polypropylene and many other chemicals. Although most propylene is obtained from the cracking of petroleum, about 2% is produced by catalytic dehydrogenation of propane (CH3CH2CH3): CH3CH2CH3 PUA1203 CH2CH=CH2 + H2 Because this reaction is endothermic, heaters are placed between the reactor vessels to maintain the required temperature. (a) If the molar entropy, S, of propylene is 267.1 J/mol K, find its entropy of formation, s. (b) Find AG of propylene (AH; for propylene = 20.4 kJ/mol). (c) Calculate AHPX and AGPx for the dehydrogenation. rxn rxn (d) What is the theoretical yield of propylene at 580C if the initial pressure of propane is 1.00 atm? (e) Would the yield change if the reactor walls were permeable to H2? Explain. (1) At what temperature is the dehydrogenation spontaneous, with all substances in the standard state