For the heterogeneous equilibrium Fe _3 O _4(s) + 4 , H _2(g) 3 , Fe (s) + 4 , H _2 O…

CHEMISTRY · Single correct · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

For the heterogeneous equilibrium

\text{Fe}_3\text{O}_4(s) + 4\,\text{H}_2(g) \rightleftharpoons 3\,\text{Fe}(s) + 4\,\text{H}_2\text{O}(g)

which expression correctly represents

K_p

? (a)

\dfrac{(P_{\text{H}_2\text{O}})^4(P_{\text{Fe}})^3}{(P_{\text{H}_2})^4}

(b)

\dfrac{P_{\text{H}_2\text{O}}}{P_{\text{H}_2}}

(c)

\dfrac{(P_{\text{H}_2\text{O}})^4}{(P_{\text{H}_2})^4}

(d)

\dfrac{(P_{\text{H}_2})^4}{(P_{\text{H}_2\text{O}})^4}