Say I have a refrigerator running at -30C and inside the refrigerator is a container containing 100mL of pure ethanol with a 100mL block of pure H2O floating in it.
Pure ethanol has a freezing point of -114C, A 50/50 ethanol water mix has a freezing point of -40C and water has a freezing point of 0C.
So my question is, as time goes towards infinity, what will happen to the system. On the one hand, the ice shouldn’t melt as it’s below the melting point of ice. On the other hand, it’s above the melting point of the ethanol-water mixture.