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Thread: Question about supercooling and solidification

  1. #1 Question about supercooling and solidification 
    Junior Member
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    Jun 2014
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    During the cooling of a liquid, if no impurity of site of nuclearation, an appreciable solidification will begin only after the temperature has been lowered to below the equilibrium solidification (or melting) temperature. This phenomenon is termed supercooling. My question is, if supercooling is necessary, what is the meaning of "equilibrium" solidification (or melting) temperature (e.g. 0oC for water)?

    Another question is, at precisely equilibrium temperature, will liquid becomes a mixture of solid and liquid or nothing will change? Some may say solid and liquid co-exist but what is the driving force if it is not energetically favorable for either side at exact equilibrium temperature? What determines the portion of liquid and solid at this temperature if they really co-exist?
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  2. #2  
    Banned
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    Jul 2014
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    In reply to kelsiu, re: your #1 post.

    Hello and Cheers! Very good questions...but I'm sure you can "Google" answers very quickly w/regard to "super-cooling". I looked, and there's a LOT of info on this!

    Welcome to the Forum!
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  3. #3  
    Senior Member
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    Jan 2013
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    It takes 80 calories to melt 1 gram of ice. The water/ice ratio depends on the amount of heat (cooling) applied.
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