Consider the following two reactions that occur in cellular metabolism: (1) Glucose…

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

Problem

Consider the following two reactions that occur in cellular metabolism: (1) Glucose

+\,\text{P}_\text{i} \rightarrow

Glucose-6-P

\Delta G^\circ = +13.8\,\text{kJ mol}^{-1}

(2) ATP

\rightarrow

ADP

+\,\text{P}_\text{i}

\Delta G^\circ = -30.5\,\text{kJ mol}^{-1}

When these reactions are coupled so that inorganic phosphate (

\text{P}_\text{i}

) does not appear in the overall equation, what is the standard free-energy change for the net formation of Glucose-6-P from glucose and ATP? (a)

+44.3\,\text{kJ mol}^{-1}

(b)

-30.5\,\text{kJ mol}^{-1}

(c)

-16.7\,\text{kJ mol}^{-1}

(d)

+16.7\,\text{kJ mol}^{-1}