The conversion of substance X to substance Y has

CHEMISTRY · Single correct · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

\Delta G^{\circ}=+23\,\text{kJ}

. ATP hydrolysis to ADP and phosphate under the same conditions has

\Delta G^{\circ}=-31\,\text{kJ}

. If these two reactions are directly coupled, what is the overall

\Delta G^{\circ}

for the combined process? (a)

+8\,\text{kJ}

(b)

-31\,\text{kJ}

(c)

-8\,\text{kJ}

(d)

+54\,\text{kJ}