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← ScienceWhich outcome limits performance of endothermic chemical engines?
A)Reverse reaction becomes kinetically dominant
B)Second law efficiency limit reached✓
C)Internal pressure exceeds material strength
D)Exothermic pathways become thermodynamically stable
💡 Explanation
Endothermic engines are limited by maximum possible efficiency, because the Carnot efficiency dictates the upper limit based on operating temperatures; therefore, the engine undergoes irreversibility at the second law efficiency limits, rather than being dictated exclusively by reaction kinetics or material properties.
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