Solidification (cont.)
At temperature T<Tm there is a driving force for solidification ?G
?G=?H-T?S
But ?S=?H/Tm
Thus ?G=?H-T?H/Tm
Rearranging ?G=?H?T/Tm where ?T=(Tm-T) is the supercooling
The larger the supercooling, the larger the driving force for change
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