Chapter 16, Problem 68QRT

(a)

Interpretation Introduction

Interpretation:

The equilibrium constant $\left(K_{\text{P}}\right)$ has to be calculated for the reaction, ${\text{CH}}_4\left(g\right)+2{\text{O}}_2\left(g\right)\rightleftarrows {\text{CO}}_{\text{2}}\left(\text{g}\right)+{\text{2H}}_{\text{2}}\text{O}\left(\text{g}\right)$.

Concept Introduction:

The Gibbs free energy of a system is directly related to the equilibrium constant of a reaction.  The Gibbs free energy of the system is a state function as it is defined in terms of thermodynamic properties that are state functions.  The symbol for equilibrium constant is $K_{\text{P}}$.

(b)

Interpretation Introduction

Interpretation:

The equilibrium constant $\left(K_{\text{P}}\right)$ has to be calculated for the reaction, ${\text{2NO}}_{\text{2}}\left(\text{g}\right)\rightleftarrows {\text{N}}_2{\text{O}}_4\left(g\right)$.

Concept Introduction:

Refer to part (a).