Answer:
Option C. Kc = [CO2] / [C] [O2]
Step-by-step explanation:
The balanced equation for the reaction is given below:
C(s) + O2(g) <===> CO2(g)
The equilibrium constant for a reaction is simply the ratio of the concentration of the products to the concentration of the reactants.
Thus, the expression for the equilibrium constant for the above equation is given by:
Kc = [CO2] / [C] [O2]