Free Energy of Coupled Reactions
An exergonic reaction that releases 20 kJ of free energy is coupled to an endergonic reaction that requires an input of 10 kJ of free energy. What is the net change in free energy (ΔG) for the overall coupled reaction?
A
10 kJ (net absorption of energy)
B
0 kJ (they exactly cancel out)
C
30 kJ (sum of released and required energies)
D
10 kJ (net release of energy)
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