Question

which will not appear in the equilibrium constant expression for the reaction below?
h₂o(g) + c(s) ⇌ h₂(g) + co(g)
○ h₂o
○ c
○ h₂
○ co

Explanation:

In the equilibrium constant expression, pure solids (like \( C(s) \)) and pure liquids are not included because their concentrations are considered constant. For the reaction \( \ce{H2O(g) + C(s) <=> H2(g) + CO(g)} \), the equilibrium constant expression is \( K = \frac{[\ce{H2}][\ce{CO}]}{[\ce{H2O}]} \). So, the concentration of the solid carbon (\([\ce{C}]\)) does not appear in the equilibrium constant expression.

Answer:

[C]