The phosphorylation of glucose is represented by the unfavorable reaction

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

\text{Glucose}+\text{P}_\text{i} \rightarrow \text{Glucose-6-P}+\text{H}_2\text{O} \quad (\Delta G^{\circ}>0)

. Which of the following favorable reactions, when combined with the one above, is most likely to yield an overall negative

\Delta G^{\circ}

? (a)

\text{ADP}+\text{P}_\text{i}\;\rightarrow\;\text{ATP}+\text{H}_2\text{O}

(b)

\text{ATP}+\text{H}_2\text{O}\;\rightarrow\;\text{AMP}+2\,\text{P}_\text{i}

(c)

\text{ATP}+\text{H}_2\text{O}\;\rightarrow\;\text{ADP}+\text{P}_\text{i}

(d)

2\,\text{P}_\text{i}\;\rightarrow\;\text{P}_2\text{O}_7^{4-}+\text{H}_2\text{O}