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Posted by on Tuesday, October 16, 2012 at 11:12pm.

If a solute is very soluble in a solvent (ethanol), why doesn't crystallization occur?

I attempted to recrystallize 14 g of solute A in 30 mL of ethanol, but crystallization didn't occur. Why?

Is it because a) the solution is supersaturated or b) because there is too much solvent? How can I tell which of the two reasons is to blame?

  • Chemistry - , Wednesday, October 17, 2012 at 12:24am

    More than likely it isn't supersaturated. The probable cause is too much solvent. Let some of the solvent evaporate.
    If you want to check to see if it is supersaturated, drop a crystal of the solute into the solution. If it is supersaturated the solute should crystallize immediately.

  • Chemistry - , Wednesday, October 17, 2012 at 8:00pm

    thank you!

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