5.3 Exercise 45

Ethylene, C₂H₄, a byproduct from the fractional distillation of petroleum, is fourth among the 50 chemical compounds produced commercially in the largest quantities. About 80% of synthetic ethanol is manufactured from ethylene by its reaction with water in the presence of a suitable catalyst. $\text{C}_{2} \text{H}_{4} \left(g\right) + \text{H}_{2} \text{O} \left(g\right) \rightarrow \text{C}_{2} \text{H}_{5} \text{OH} \left(l\right)$

Using the data in the table in Appendix G, calculate ΔH° for the reaction.