Chemistry - please help me?
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http://www.creative-chemistry.org.uk/alevel/module5/documents/N-ch5-08.pdf What is the purpose of adding ethanol (step 5). How does it help the salt precipitate?
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Answer:
The copper complex is very soluble in water, but not as soluble in ethanol. Pouring the reaction mixture into ethanol will force the salt to crystallize because of the lowered solubility. The ethanol acts as an antisolvent, inducing precipitation rather than dissolution.
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