MCQ
Steam reacts with iron at high temperature to give hydrogen gas and $Fe_3O_4 (s)$. The correct expression for the equilibrium constant is
- A$\frac{{P_{{H_2}}^2}}{{P_{{H_2}O}^2}}$
- ✓$\frac{{{{({P_{{H_2}}})}^4}}}{{{{({P_{{H_2}O}})}^4}}}$
- C$\frac{{{{({P_{{H_2}}})}^4}[F{e_3}{O_4}]}}{{{{({P_{{H_2}O}})}^4}[Fe]}}$
- D$\frac{{[F{e_3}{O_4}]}}{{[Fe]}}$
