Which one has the highest boiling point

Options

A. Acetone
B. Ethyl alcohol
C. Diethyl ether
D. Chloroform

Explanation

To determine which compound has the highest boiling point among acetone, alcohol (ethanol), diethyl ether, and chloroform, we can analyze the molecular structure and intermolecular forces of each compound.

### Step 1: Identify the Compounds
- **Acetone (C3H6O)**: A ketone with a carbonyl group (C=O).
- **Ethanol (C2H5OH)**: An alcohol with a hydroxyl group (-OH).
- **Diethyl Ether (C4H10O)**: An ether with an ether bond (R-O-R).
- **Chloroform (CHCl3)**: A halogenated hydrocarbon.

### Step 2: Analyze Intermolecular Forces
- **Acetone**: Exhibits dipole-dipole interactions due to the carbonyl group but lacks hydrogen bonding.
- **Ethanol**: Can form hydrogen bonds due to the presence of the -OH group, which significantly increases its boiling point.
- **Diethyl Ether**: Has weaker dipole-dipole interactions and cannot form hydrogen bonds, leading to a lower boiling point.
- **Chloroform**: Exhibits dipole-dipole interactions due to the presence of chlorine, but it does not form hydrogen bonds.

### Step 3: Compare Boiling Points
- **Acetone**: Boiling point ~ 56°C
- **Ethanol**: Boiling point ~ 78°C
- **Diethyl Ether**: Boiling point ~ 34°C
- **Chloroform**: Boiling point ~ 61°C

### Step 4: Conclusion
Based on the analysis of the boiling points and the intermolecular forces:
- **Ethanol has the highest boiling point** among the given compounds due to its ability to form hydrogen bonds.

### Final Answer
**Ethanol has the highest boiling point.**