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7 April, 01:43

Which of the following techniques is most appropriate for the recovery of solid KNO3 from an aqueous solution of KNO3? A. Paper chromatographyB. FiltrationC. TitrationD. ElectrolysisE. Evaporation to dryness

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  1. 7 April, 01:47
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    E. Evaporation to dryness

    Explanation:

    E. - Evaporation to dryness is the best method for the recovery of solid KNO3 from an aqueous solution of KNO3.

    (KNO3 is very soluble, and will violently decompose if overheated.)

    Paper chromatography is for separation of different weight molecules in solution.

    B. Filtration won't work on a solution

    C. Titration would contaminate the salt with something else and is used

    to determine concentrations

    D. Electrolysis would destroy the salt
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