Chemistry - Thermodynamics - II Question with Solution | TestHub

The decomposition of MO(s) to M(s) and O₂(g) involves an increase in disorder (entropy increases) and requires energy input (endothermic). For spontaneity ($\Delta G^{\circ }<0$), high temperatures are needed to make $T\Delta S^{\circ }>\Delta H^{\circ }$, as $\Delta S^{\circ }$ is positive. Thus, all statements are correct.