Chemistry

Problem

At 298 K, the dissolution of substance Q has

\Delta H^\circ = +2.3\,\text{kJ}\cdot\text{mol}^{-1}

and

\Delta G^\circ = -8.7\,\text{kJ}\cdot\text{mol}^{-1}

. Calculate

\Delta S^\circ

for this process in J mol⁻¹ K⁻¹ (two significant figures).