Chemistry

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}

490\,\text{K}

550\,\text{K}

740\,\text{K}