Answer:
[C]
General Formulas and Concepts:
Chemistry
Kinetics
Equilibrium
Explanation:
Equilibrium Expressions are only written for either aqueous solutions or gases. Solids and liquids are negligible for equilibrium. Our equilibrium constant expression would be [tex]\displaystyle K = \frac{[CO][H]}{[H_2O]}[/tex].
∴ Carbon C (s) is not included in the expression and is our answer.
