Chemistry

Chemistry

Problem

The conversion of substance X to substance Y has ΔG∘=+23 kJ\Delta G^{\circ}=+23\,\text{kJ}. ATP hydrolysis to ADP and phosphate under the same conditions has ΔG∘=−31 kJ\Delta G^{\circ}=-31\,\text{kJ}. If these two reactions are directly coupled, what is the overall ΔG∘\Delta G^{\circ} for the combined process? a) +8 kJ+8\,\text{kJ} b) −31 kJ-31\,\text{kJ} c) −8 kJ-8\,\text{kJ} d) +54 kJ+54\,\text{kJ}

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