Which among the following compounds does not show hydrogen bonding ?

Options

A. Water
B. Ethyl alcohol
C. Acetic acid
D. diethyl ether

Answer

To determine which compound does not show hydrogen bonding among the given options, we will analyze each compound based on the presence of acidic hydrogen.

### Step-by-Step Solution:

1. **Understanding Hydrogen Bonding**:
Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (like nitrogen, oxygen, or fluorine). This creates a partial positive charge on the hydrogen, allowing it to interact with lone pairs on other electronegative atoms.

2. **Identifying Acidic Hydrogen**:
Acidic hydrogen is defined as hydrogen that is attached to electronegative atoms. Examples include:
- H bonded to O (as in water or alcohol)
- H bonded to N (as in amines)
- H bonded to F (as in HF)

3. **Analyzing Each Compound**:
- **Water (H₂O)**: Contains two hydrogen atoms bonded to oxygen. Both hydrogen atoms are acidic, allowing for hydrogen bonding.
- **Ethyl Alcohol (C₂H₅OH)**: Contains one hydrogen atom bonded to oxygen (the -OH group). This hydrogen is acidic and can form hydrogen bonds.
- **Acetic Acid (CH₃COOH)**: Contains a hydrogen atom bonded to the hydroxyl group (-OH). This hydrogen is also acidic, allowing for hydrogen bonding.
- **Diethyl Ether (C₂H₅OC₂H₅)**: Contains an oxygen atom bonded to two ethyl groups. However, there are no hydrogen atoms directly bonded to the oxygen. Therefore, there are no acidic hydrogens present in diethyl ether.

4. **Conclusion**:
Among the compounds analyzed, diethyl ether does not have any acidic hydrogen and therefore does not exhibit hydrogen bonding.

### Final Answer:
Diethyl ether does not show hydrogen bonding.