A researcher measures the standard free energy change for a reaction and obtains at and at

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

Problem

A researcher measures the standard free energy change for a reaction and obtains

\Delta G^{\circ}=-15\,\text{kJ mol}^{-1}

300\,\text{K}

and

\Delta G^{\circ}=+25\,\text{kJ mol}^{-1}

800\,\text{K}

. Assuming

\Delta H^{\circ}

and

\Delta S^{\circ}

are constant in this temperature interval, which temperature is closest to the equilibrium point for the reaction? (a)

630\,\text{K}

(b)

490\,\text{K}

(c)

550\,\text{K}

(d)

740\,\text{K}