The Reaction of Chlorine and Water Vapor Was Allowed to Reach

question 8

Multiple Choice

The reaction of chlorine and water vapor was allowed to reach equilibrium at 125 C:
2 Cl₂ (g) + 2 H₂ O (g) 4 HCl (g) + O₂(g) If the volume of the reaction chamber were suddenly doubled, at equilibrium:

• A) the number of moles of O₂ would decrease.
• B) the number of moles of Cl₂ would increase.
• C) the number of moles of H₂O would decrease.
• D) the number of moles of all gases would be unchanged.
• E) cannot be determined from information.