For the reaction shown below complete the following calculations. H2(g) + C2H4(g) --> C2H6(g)
(a) Estimate the enthalpy of reaction using the bond energy values in Table 9.4.
(b) Calculate the enthalpy of reaction, using standard enthalpies of formation. (ΔH?f for H2, C2H4, and C2H6 are 0, 52.3 kJ/mol, and -84.7 kJ/mol, respectively.)