Chapter 5, Problem 83E

Ethylene, ${\text{C}}_2{\text{H}}_2$, 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. ${\text{C}}_2{\text{H}}_2\left(g\right)+{\text{H}}_2\text{O}\left(g\right)\to {\text{C}}_2{\text{H}}_5\text{OH}\left(l\right)$ Using the data in the table in Appendix G, calculate $\Delta H°$ for the reaction.