Consider the following system. The equilibrium constant for the reaction at 900°C is 0.082. A reaction is initiated with only COCl2 in a 2.0-liter vessel. At equilibrium 2.36 × 10−3 mol of Cl2 is present. How many moles of COCl2 are present at equilibrium?
COCl2(g) CO(g) + Cl2(g)
a. 1.4 × 10^−4 mol
b. 1.4 × 10^−3 mol
c. 6.1 × 10^−5 mol
d. 5.8 × 10^−4 mol
e. 3.4 × 10^−5 mol
Answer: e. 3.4 × 10^−5 mol