Chapter 14.1, Problem 14.1E

Synthesis gas (a mixture of CO and H₂) is increased in the concentration of hydrogen by passing it with steam over a catalyst. This is the so-called water–gas shift reaction. Some of the CO is converted to CO₂, which can be removed:

$\text{CO}(g)+{\text{H}}_2\text{O}(g)\stackrel{}{\rightleftharpoons }{\text{CO}}_2(g)+{\text{H}}_2(g)$

Suppose you start with a gaseous mixture containing 1.00 mol CO and 1.00 mol H₂O. When equilibrium is reached at 1000°C, the mixture contains 0.43 mol H₂. What is the molar composition of the equilibrium mixture?