Distinction between pairs of compounds
Butan-1-ol `(CH_(3)CH_(2)CH_(2)CH_(2)OH)` and butan-2-ol `(CH_(3)CHOHCH_(2)overset(3)(CH_(3)))`

Explanation

### Step-by-Step Solution:

1. **Identify the Structures of the Compounds**:
- Butan-1-ol (CH₃CH₂CH₂CH₂OH) has the hydroxyl (-OH) group at the first carbon.
- Butan-2-ol (CH₃CHOHCH₂CH₃) has the hydroxyl (-OH) group at the second carbon.

2. **Reactivity with Lucas Reagent**:
- **Butan-1-ol**: This is a primary alcohol. When treated with Lucas reagent (ZnCl₂ in HCl), it reacts slowly and requires heating. The reaction can take several hours to produce a product.
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