For the reaction at

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

Problem

For the reaction

A(aq) \rightleftharpoons B(aq)

298\,\text{K}

, the standard free-energy change is

\Delta G^\circ = -10.0\,\text{kJ}\cdot\text{mol}^{-1}

. Under which set of concentrations will the forward reaction be NON-spontaneous at

298\,\text{K}

? (a)

[A] = 0.10\,\text{M},\; [B] = 1.0\,\text{M}

(b)

[A] = 1.0\,\text{M},\; [B] = 100\,\text{M}

(c)

[A] = 1.0\,\text{M},\; [B] = 56\,\text{M}

(d)

[A] = 1.0\,\text{M},\; [B] = 0.005\,\text{M}