Chapter 19, Problem 73E

Consider the reaction:

   ${\text{H}}_{\text{2}}\left(g\right)+{\text{ I}}_{\text{2}}\left(g\right)\rightleftharpoons \text{2HI}\left(g\right)$

The following data show the equilibrium constant for this reaction measured at several different temperatures. Use the data to find $\Delta H_{\text{rxn}}^{°}$ and $\Delta S_{\text{rxn}}^{°}$ for the reaction.

Temperature	Kp
150 K	$\text{1}{\text{.4×10}}^{-6}$
175 K	$\text{4}{\text{.6×10}}^{-4}$
200 K	$\text{3}{\text{.6×10}}^{-2}$
225 K	1.1
250 K	15.5