An Equilibrium Mixture of CO,O₂ and CO₂ at a Certain

Multiple Choice

An equilibrium mixture of CO,O₂ and CO₂ at a certain temperature contains 0.0010 M CO₂ and 0.0100 M O₂.At this temperature,K_c equals 1.4 × 10² for the reaction:
2 CO(g) + O₂(g) ⇌ 2 CO₂(g) .
What is the equilibrium concentration of CO?

A) 7.1 × 10^-7 M
B) 8.4 × 10^-4 M
C) 1.4 × 10^-2 M
D) 1.2 × 10^-1 M