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Question
Why dextro and laevo rotatory isomers of Butan-2-ol are difficult to separate by fractional distillation?
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Solution
Dextro and laevorotatory isomers of butane-2-ol are difficult to separate by fractional distillation because of no difference in boiling points of these two rotatory isomers.
\[\begin{array}{cc}
\phantom{.......}\ce{OH}\\
\phantom{.....}|\\
\ce{\underset{\text{Butan-2-ol}}{CH3-CH2-CH-CH3}}
\end{array}\]
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