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Question:

• Which solvent is the best to recrystallize an unknown
compound?
A: solubility in cold water is 2g, in boiled water is 10g;
B: Solubility in cold toluene is 30g , in boiled toluene is 100g.
C: Solubility in cold acetone is 0.1g, in boiled acetone is 1g.
D: Solubility in cold ethanol is 0.1g, in boiled ethanol is 0.5g.

User Uma Raja
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1 Answer

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Based on the given solubility information, the best solvent to recrystallize the unknown compound would be toluene.

This is because the compound has high solubility in both cold and boiled toluene, making it easier to dissolve and recrystallize. The other solvents have lower solubility values, which may make it harder to dissolve and recrystallize the unknown compound.
User Marjan Venema
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