Arrange each set of compounds in order of increasing boiling point : Propane, 1-chloropropane, isopropylchloride, 1-chlorobutane.

Explanation

To arrange the compounds propane, 1-chloropropane, isopropyl chloride, and 1-chlorobutane in order of increasing boiling point, we need to consider the molecular structure, molecular mass, and branching of each compound. Here’s the step-by-step solution:

### Step 1: Identify the Structures
1. **Propane (A)**: \( \text{CH}_3\text{CH}_2\text{CH}_3 \)
2. **1-Chloropropane (B)**: \( \text{CH}_3\text{CH}_2\text{CH}_2\text{Cl} \)
3. **Isopropyl Chloride (C)**: \( \text{CH}_3\text{CHCl}\text{CH}_3 \)
4. **1-Chlorobutane (D)**: \( \text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{Cl} \)

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