Question

he reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ. The reaction of ATP with water to yield ADP, hydrogen phosphate ion, and hydrogen ion is energetically favorable by 30.5 kJ. These reactions are coupled so that the overall process is energetically favorable. What is ΔG for the overall process?

Answer 1

The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ.

ΔG₁, Unfavorable = 9.2kJ

The reaction of ATP with water to yield ADP, hydrogen phosphate ion, and hydrogen ion is energetically favorable by 30.5 kJ.

ΔG₂, Favorable = -30.5kJ

ΔG for the overall process = ΔG₁+ΔG₂

= -30.5 + 9.2 = - 21.3kJ