Chemistry 112 Quiz No. 5B
Friday, 11:30
Feb. 22, 2008
Section: [blank]
1. Consider the following system at equilibrium:
CO(g) + O₂(g) ⇌ CO₂(g)
Predict the effect of the following changes when the system is initially in a state of equilibrium. Assume that the reaction container volume remains constant. (Do not forget to balance the chemical equation).
(a) Carbon dioxide gas is added to the system.
2CO(g) + O₂(g) ⇌ 2CO₂(g)
Shifts left toward reactants
(b) Pressure is increased.
Shifts Right toward products
(c) Carbon monoxide gas is removed from the system.
Shifts left toward reactants
(d) Write the equilibrium constant expression for this reaction. (Do not forget to balance the chemical equation).
K = [CO₂]² / ([CO]² * [O₂])