Chapter 16, Problem 63QRT

(a)

Interpretation Introduction

Interpretation:

The ${\Delta }_{\text{r}}G°$, ${\Delta }_{\text{r}}H°$ and ${\Delta }_{\text{r}}S°$ values for ${\text{CaCO}}_3\left(\text{s}\right)\to \text{CaO}\left(\text{s}\right)+{\text{CO}}_{\text{2}}\left(\text{g}\right)$ at $25.0°\text{C}$ have to be calculated.

Concept Introduction:

The Gibbs free energy of a system is defined as the enthalpy of the system minus the product of the temperature times the entropy of the system.  The Gibbs free energy of the system is a state function as it is defined in terms of thermodynamic properties that are state functions.

(b)

Interpretation Introduction

Interpretation:

Whether the reaction is product favored or reactant favored has to be stated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Whether the reaction is product favored at all temperatures or not has to be stated.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The lowest temperature at which products are obtained has to be calculated.

Concept Introduction:

Refer to part (a).