AP Chemistryeasymcq1 pt
Reaction 1 has ΔG° = +30 kJ. Reaction 2 has ΔG° = −80 kJ. What is ΔG° for the coupled pair?
A.−50 kJ
B.−110 kJ
C.+50 kJ
D.+110 kJ
Explanation
Core Concept
Gibbs energies sum across coupled reactions: +30 + (−80) = −50 kJ. The favorable reaction drives the unfavorable one — the strategy cells use.
Correct Answer
A−50 kJ
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