Chapter 16, Problem 73QRT

(a)

Interpretation Introduction

Interpretation:

The value of ${\Delta }_{\text{r}}G°$ for the reaction, ${\text{Br}}_2\left(l\right)+{\text{H}}_2\left(g\right)\rightleftarrows 2\text{HBr}\left(g\right)$, has to be calculated.

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 value of ${\Delta }_{\text{r}}G°$ for the reaction, ${\text{H}}_2\text{O}\left(l\right)\rightleftarrows {\text{H}}_2\text{O}\left(g\right)$, has to be calculated.

Concept Introduction:

Refer to concept of part (a).

(c)

Interpretation Introduction

Interpretation:

The value of ${\Delta }_{\text{r}}G°$ for the reaction, ${\text{N}}_2\left(g\right)+3{\text{H}}_2\left(g\right)\rightleftarrows 2{\text{NH}}_3\left(g\right)$, has to be calculated.

Concept Introduction:

Refer to concept of part (a).