Chapter 14.5, Problem 1PPA

Practice Problem ATTEMPT

Ethyl iodide $\text{(}{\text{C}}_{\text{2}}{\text{H}}_{\text{5}}\text{I)}$ decomposes at a certain temperature in the gas phase as follows:

${\text{C}}_{\text{2}}{\text{H}}_{\text{5}}\text{I(}g\text{)}\to {\text{C}}_{\text{2}}{\text{H}}_{\text{4}}\text{(g)+HI(}g\text{)}$

From the following data, determine the rate constant of this reaction. Begin by constructing a plot to verify that the reaction is first order:

Time (min)	$\text{[}{\text{C}}_{\text{2}}{\text{H}}_{\text{5}}\text{I] (}M\text{)}$
0	0.36
15	0.30
30	0.25
48	0.19
75	0.13