Question:
Which of the following compounds has highest boiling point?
Which of the following compounds has highest boiling point?
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Branching ↓ surface area ↓ boiling point.
Updated On: May 4, 2026
- 1-Bromobutane
- 1-Bromo-2-methylpropane
- 2-Bromobutane
- 2-Bromo-2-methylpropane
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The Correct Option is A
Solution and Explanation
Concept:
Boiling point depends on:
• Molecular mass
• Surface area (branching effect)
Step 1: Effect of branching.
• More branching → lower boiling point
• Straight chain → higher boiling point
Step 2: Analyze options.
• (A) 1-Bromobutane → straight chain \checkmark
• (B), (C), (D) → branched structures → lower boiling point $\times$
Step 3: Conclusion. \[ \text{Highest boiling point = least branched compound} \]
Boiling point depends on:
• Molecular mass
• Surface area (branching effect)
Step 1: Effect of branching.
• More branching → lower boiling point
• Straight chain → higher boiling point
Step 2: Analyze options.
• (A) 1-Bromobutane → straight chain \checkmark
• (B), (C), (D) → branched structures → lower boiling point $\times$
Step 3: Conclusion. \[ \text{Highest boiling point = least branched compound} \]
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