1.

A flask contains a mixture of isohexane and 3- methylpentane. One of the liquids boils at 63°C while the other boils at 60°C. What is the best way to seprate the two liquids and which one will be distilled out first? (1) simple distillation, 3-methylpentane (2) simple distillation, isohexane (3) fractional distillation, isohexane(4) fractional distillation, 3-methylpentane

Answer»

Answer is (3) fractional distillation, isohexane

Liquid which have less difference in boiling point can be isolated by fractional distillation and liquid with less boiling point will be isolated first.

Answer is (3)

As difference in Boiling point is very less

 Fractional distillation Higher boiling point liq. will be obtained as distillate.



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