For the reaction CO2 + H2 <--> CO + H20 + heat, indicate how the change in condition will shift the equilibrium (ie right or left)

Question

a. Removal of CO2
b. Addition of H2 molecules
c. Increase volume of reaction vessel
d. Addition of catalyst
e. Refrigerate reaction vessel

Answer 1

Le Chatelier's Principle, in not so eloquent terms, says that a reaction at equilibrium will shift to try and undo what we've done to it.
a. So if we remove CO2 it will move to the left so as to increase CO2.
b. Adding H2 molecules it will shift to the right to try to use up the added H2.
etc.