The equilibrium constant expression for the reaction
CuSO₄(s) $\rightarrow$ CuO(s)+ SO₃(g)
is K =[CuO(s)][SO₃(g)]/[CuSO₄(s)].

Question

The equilibrium constant expression for the reaction CuSO₄(s)$\rightarrow$CuO(s)+ SO₃(g) is K =[CuO(s)][SO₃(g)]/[CuSO₄(s)].

Quizplus · Accepted Answer

The equilibrium constant expression for a reaction involving solids only includes the concentrations of the gases or aqueous species. Solids and pure liquids do not appear in the expression. Therefore, the correct expression for this reaction would only include the concentration of the gaseous products, if any, and not the concentrations of the solid reactants or products.

The Equilibrium Constant Expression for the Reaction CuSO4(s) →\rightarrow→ CuO(s)+ SO3(g) Is K =[CuO(s)][SO3(g)]/[CuSO4(s)]

The Equilibrium Constant Expression for the Reaction
CuSO₄(s) $\rightarrow$ CuO(s)+ SO₃(g)
Is K =[CuO(s)][SO₃(g)]/[CuSO₄(s)]