Given the following reaction:
A ( s ) + B ( l ) ⟺ C ( g ) + D ( g ) Δ H ∘ = − 67 k J
If the above reactants and products are contained in a closed vessel and the reaction system is at equilibrium, the number of moles of C can be decreased by which of the following?
Group of answer choices
Decreasing the temperature of the reaction system
Adding substance A to the system
Removing substance D from the system.
Decreasing the volume of the reaction vessel
Adding a catalyst to the reaction system