Heats of reaction calculated from bond energies and from heats of formation are often, but not always, close to each other.a. Industrial ethanol (CH3CH2OH) is produced by a catalytic reaction of ethylene (CH2=CH2) with water at high pressures and temperatures. Calculate ΔHºrxn for this gas-phase hydration of ethylene to ethanol, using bond energies and then using heats of formation.b. Ethylene glycol is produced b the catalytic oxidation of ethylene to ethylene oxide, which then reacts with water to form ethylene glycol:image from custom entry tool + H2O (l) = HOCH2CH2OH(l)The ΔHºrxn for this hydrolysis step, based on heats of formation, is -97 kJ/mol. Calculate ΔHºrxn for the hydrolysis using bond energies.c. Why are the two values relatively close for the hydration in part "a" but not close for the hydrolysis in part "b"?
