For the following endothermic reaction system at equilibrium: Fe2O3(s) + 3H2(g) 2Fe(s) + 3H2O(g) Choose the changes that will shift the equilibrium position to the left.
(Select all that apply.)
Decrease volume
Decrease temperature
Increase temperature
Remove H2(g)
Remove Fe2O3(s)
Add a catalyst
Add H2(g)