Chapter 17.6, Problem 17.14AFP

Interpretation Introduction

Interpretation : The temperature at which the equilibrium constant is $\text{0}\text{.885}$ should be calculated for the reaction of conversion of ${\text{N}}_{\text{2}}{\text{O}}_{\text{4}}$ to ${\text{NO}}_{\text{2}}$ . The $\Delta H_{rxn}\text{= 57}\text{.2 kJ/mol}$ and equilibrium at $\text{298 K}$ is $\text{0}\text{.115}$ .

Concept Introduction : Equilibrium constants are the ratio of gaseous and aqueous products and reactant molecules when the reaction reaches equilibrium. The relation between $\Delta H_{rxn}$ and equilibrium constants can be written as:

  $\ln \frac{K_2}{K_1}=\frac{\Delta H_{rxn}}{R}\left(\frac{1}{T_1}-\frac{1}{T_2}\right)$