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Decreasing the temperature causes the solubility of the impurities in the solution and the substance being purified to decrease. The impure substance then of a recrystallization procedure National Science

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2009 10 10· Recrystallisation of benzoic acid and determination of its melting point a Recrystallisation Theory An impure solid may be purified by first dissolving it in the minimum quantity of a boiling solvent. Insoluble impurities

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2018 04 22· Science photo library d Copper can be purified by electrolysis using a pure copper cathode and an impure copper anode.

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2018 05 30· Purification of copper. the copper produced is not pure enough for use as a conductor, so it is purified using electrolysis is made of the impure copper which is to be purified. The negative electrode

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