Thermodynamics

For spontaneous process $\left(\left[\Delta H_{\text {system }}-T \Delta S_{\text {system }}\right]\right)<0$

Entropy is an extensive property and state function

A process will always be spontaneous at all temperatures, if $\mathrm{T} \Delta \mathrm{S}$ is positive

At 273 K , for the transition Ice $(s) \longrightarrow$ Water $(l), \Delta \mathrm{G}=0$