Calculate the standard free energy change and equilibrium constant for the vapor-phase hydration of ethylene at 145C. Hydration of ethylene means reaction of ethylene with water vapor to produce ethanol vapor as per reaction below: C2H4(g) + H2O(g) C2H5OH(g) From the heat-capacity data: (Table C.1) Constants in equation C^ig p IR = A + BT+ CT2 + DT-2 for T (K) from 298 k. Values of H298 and G298 at 298.15 K for the hydration reaction are found from the heat-of-formation and Gibbs-energy-of-formation data. (Table C.4).