For the reaction A + B − ⇀ ↽ − C + D , assume that the standard change in free energy has a positive value. Changing the conditions of the reaction can alter the value of the change in free energy ( Δ G ) . Classify the conditions as to whether each would decrease the value of Δ G , increase the value of Δ G , or not change the value of Δ G for the reaction. For each change, assume that the other variables are kept constant.

a. Adding a catalyst

decrease the free energy value, increase the free energy value, or not change the free energy

b. increasing [C] and [D]

decrease the free energy value, increase the free energy value, or not change the free energy

c. Coupling with ATP hydrolysis

decrease the free energy value, increase the free energy value, or not change the free energy

d. Increasing [A] and [B]

decrease the free energy value, increase the free energy value, or not change the free energy