Chapter 6, Problem 6B.4P

Interpretation Introduction

Interpretation:

The standard enthalpy of the reaction ${\text{H}}_{\text{2}}\left(\text{g}\right)+{\text{Cl}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons 2\text{HCl}\left(\text{g}\right)$ has to be calculated.

Concept introduction:

The van’t Hoff equation relates the standard enthalpy and equilibrium constant.  This shows that equilibrium constant is a function of temperature and it can also be related to enthalpy.  The van’t Hoff equation is represented by the equation as given below.

    $\ln \left(\frac{K_2}{K_1}\right)=-\frac{\Delta H°}{R}\left[\frac{1}{T_2}-\frac{1}{T_1}\right]$