Chapter 4, Problem 4J.6AST

Interpretation Introduction

Interpretation:

The minimum temperature required to carry out the reaction ${\text{Fe}}_{\text{3}}{\text{O}}_{\text{4}}\left(\text{s}\right)\text{+2C}\left(\text{s}\right)\to \text{3Fe}\left(\text{s}\right){\text{+2CO}}_{\text{2}}\left(\text{g}\right)$ is to be calculated.

Concept Introduction:

The value of temperature can be calculated using the values of enthalpy change and entropy change.  Since the minimum temperature is required the value of Gibb’s free energy change is considered zero.  The reaction is an endothermic reaction and also non spontaneous because the solid oxide is converted into its elemental form using carbon.  The reaction will also be carried out at high temperature.