Distinction between pairs of compounds
But-1-yne and But-2-yne

Explanation

To distinguish between But-1-yne and But-2-yne, we can analyze their structures, properties, and reactivity. Here’s a step-by-step solution:

### Step 1: Identify the Structures
- **But-1-yne**: The structure is CH₃-CH₂-C≡C-H. It has a triple bond between the first and second carbon atoms.
- **But-2-yne**: The structure is CH₃-C≡C-CH₃. It has a triple bond between the second and third carbon atoms.

### Step 2: Analyze the Presence of Acidic Hydrogen
- **But-1-yne**: This compound has one terminal hydrogen atom (the hydrogen attached to the carbon with the triple bond), which is acidic in nature. This means it can donate a proton (H⁺).
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