For the reaction at a fixed temperature

CHEMISTRY · Single correct · CBSE · Chemistry · Equilibrium · Equilibrium

Problem

For the reaction

\displaystyle \text{CaCO}_{3}(s) \rightleftharpoons \text{CaO}(s)+\text{CO}_{2}(g)

at a fixed temperature, which of the following gives the correct expression for the equilibrium constant

K_{p}

? (a)

K_{p}=P_{\text{CO}_{2}}^{2}

(b)

K_{p}=\dfrac{P_{\text{CaO}}\,P_{\text{CO}_{2}}}{P_{\text{CaCO}_{3}}}

(c)

K_{p}=P_{\text{CO}_{2}}

(d)

K_{p}=\dfrac{1}{P_{\text{CO}_{2}}}