12. What is the equilibrium constant expression for the following reaction C(s) + O2(g) →CO2(g)

The equilibrium constant expression for the given reaction is:

Kc = [CO2]/[C][O2]

where:
[CO2] represents the concentration of carbon dioxide (CO2) in the equilibrium state.
[C] represents the concentration of carbon (C) in the equilibrium state.
[O2] represents the concentration of oxygen (O2) in the equilibrium state.