Phosgene, COCl2, is a poisonous gas that decomposes into carbon monoxide and chlorine according to the following equation with Kc = 0.083 at 900°C. If the reaction is initiated with 0.600 mole of COCl2 at 900°C in a 5.00-liter container, what concentration of CO will be present after equilibrium is established?
COCl2(g) CO(g) + Cl2(g)
a. 0.072 M
b. 0.048 M
c. 0.067 M
d. 0.012 M
e. 0.090 M
Answer: c. 0.067 M