Which is the most effective method of separating mixtures of miscible volatile liquids?
A
Fractional distilliation
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B
Hand picking
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C
Chromatography
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D
Filtration
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Solution
The correct option is A Fractional distilliation Fractional distillation is the most effective method of separating mixtures of miscible volatile liquids. It is used when the difference in the boiling points of liquids to be separated is less than 20K.
Simple distillation is used to purify liquid containing non-volatile impurities. It is used when the difference in the boiling points of liquids to be separated is between 30K to 50K. It is used for liquids that do not decompose on heating.
Chromatography is used to separate a mixture having a different affinity for stationary phase and mobile phase. Filtration is used to separate a solid from a liquid.