Why dextro and laevo rotatory isomers of Butan-2-ol are difficult to separate by fractional distillation?

Explanation

To answer the question of why dextro and laevo rotatory isomers of Butan-2-ol are difficult to separate by fractional distillation, we can follow these steps:

### Step 1: Understanding the Isomers
- **Dextro and Laevo Isomers**: Dextro (D) and laevo (L) refer to the optical activity of the isomers. Dextro-rotatory isomers rotate plane-polarized light to the right, while laevo-rotatory isomers rotate it to the left.

### Step 2: Structure of Butan-2-ol
- **Chemical Structure**: Butan-2-ol has the molecular formula C4H10O and contains an alcohol (-OH) group on the second carbon. Its structure can be represented as:
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