A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at \(63^\circ\mathrm{C}\) while the other boils at \(60^\circ\mathrm{C}\). What is the best way to separate the two liquids and which one will be distilled out first ?
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- fractional distillation, 3-methylpentane
- simple distillation, 3-methylpentane
- fractional distillation, isohexane
- simple distillation, isohexane
The Correct Option is C
Solution and Explanation
Isohexane (2-methylpentane, b.p. \(60^\circ\mathrm{C}\)) is more volatile than 3-methylpentane (b.p. \(63^\circ\mathrm{C}\)), so isohexane distils out first.
Answer: (3) fractional distillation, isohexane
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