Chapter 13, Problem 40E

${\text{H}}_2\left(g\right)$ can be prepared by passing steam over hot iron $3\text{Fe}\left(\text{s}\right)+4\text{H}{\text{2}}_{}\text{O}\left(g\right)\rightleftharpoons {\text{Fe}}_{\text{2}}{\text{O}}_{\text{4}}\left(\text{s}\right){\text{+4H}}_{\text{2}}\left(\text{g}\right)$
a. Write an expression tot the thermodynamic equilibrium constant for this reaction.
b. Explain why the partial pressure of ${\text{H}}_{\text{2}}\left(\text{g}\right)$ is independent of the amounts of Fe(s) and ${\text{Fe}}_{\text{2}}{\text{O}}_{\text{4}}\left(\text{s}\right)$ present
c. Can we conclude that the production of ${\text{H}}_{\text{2}}\left(\text{g}\right)$ from ${\text{H}}_{\text{2}}\left(\text{g}\right)$ could be accomplished regardless of the proportions of Fe(s) and ${\text{Fe}}_{\text{2}}{\text{O}}_{\text{4}}\left(\text{s}\right)$ present? Explain.