d) The heat of hydrogenation of benzene is -49.8Kcal/mol while that of 1,4- cyclohexadiene is -59.3Kcal/mol Calculate the [IH for conversion of benzene to 1,4 -cyclohexadiene. (4 Marks)

1. Calculate the heat change for the hydrogenation of benzene:ΔH = -49.8 Kcal/mol2. Calculate the heat change for the hydrogenation of 1,4-cyclohexadiene:ΔH = -59.3 Kcal/mol3. Calculate the heat change for the conversion of benzene to 1,4-cyclohexadiene:ΔH = ΔH(1,4-cyclohexadiene) - ΔH(benzene)ΔH = (-59.3 Kcal/mol) - (-49.8 Kcal/mol)ΔH = -59.3 Kcal/mol + 49.8 Kcal/molΔH = -9.5 Kcal/molThe enthalpy change (EH) for the conversion of benzene to 1,4-cyclohexadiene is .