Chapter 12, Problem 63E

Hydrogen iodide, HI, decomposes in the gas phase to produce hydrogen, H₂, and iodine, I₂. The value of the rate constant, k, fur the reaction was measured at several different temperatures and the data are shown here:

Temperature (K)	k (M -1 5-1)
555	$6.23\times {10}^{-7}$
575	$2.42\times {10}^{-6}$
645	$1.44\times {10}^{-4}$
700	$2.01\times {10}^{-3}$

What is the value of the activation energy (in kJ/mol) for this reaction?