Write the expressions for $K_{p}$ and $K_{c}$ for the reaction $C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)$ .

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Solution

$K_{c} = \frac{[C a O (s)]^{2} [C O_{2} (g)]}{[C a C O_{3} (s)]}$ Taking active masses of solids as unity, $K_{c} = [C O_{2} (g)]$ . Similarly $K_{p} = p_{C O_{2}}$ .

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