Conversion of Pent-1-ene to Pent-2-yne

Explanation

To convert Pent-1-ene to Pent-2-yne, we can follow a series of chemical reactions. Below is the step-by-step solution:

### Step 1: Addition of HBr to Pent-1-ene
- **Reaction**: React Pent-1-ene (CH₂=CH-CH₂-CH₂-CH₃) with HBr.
- **Mechanism**: According to Markovnikov's rule, HBr adds across the double bond, leading to the formation of a secondary carbocation.
- **Product**: The product will be 2-bromopentane (CH₃-CHBr-CH₂-CH₂-CH₃).

### Step 2: Dehydrohalogenation using Alcoholic KOH
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