Chapter 9, Problem 9.144MP

Ethyl chloride ( ${\text{C}}_{\text{2}}{\text{H}}_{\text{5}}\text{CI}$ ), a substance used as a topical anesthetic, is prepared by reaction of ethylene with hydrogenchloride:
${\text{C}}_{\text{2}}{\text{H}}_{\text{4}}\left(g\right)+HCI\left(g\right)\to C_2{H}_{5}CI\left(g\right)\Delta H°=-72.\text{3 kJ}$

How much PV work is done in kilojoules, and what is thevalue of $\Delta E$ in kilojoules if 89.5 g ofethylene and 125 g ofHCI are allowed to react at atmospheric pressure and the volume change is $-71.\text{5 L}$ ?