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, we need to understand what hydrogen bonding is and the conditions required for it to occur.

### Step-by-Step Solution:

1. **Understanding Hydrogen Bonding**:
- Hydrogen bonding occurs when a hydrogen atom is covalently bonded to a highly electronegative atom (like oxygen, nitrogen, or fluorine) and is attracted to another electronegative atom.
- The presence of a hydrogen atom attached to an electronegative atom is essential for hydrogen bonding to take place.

2. **Analyzing the Compounds**:
- **Water (H₂O)**: In water, each hydrogen is bonded to oxygen, which is highly electronegative. Therefore, water exhibits hydrogen bonding.
- **Ethyl Alcohol (C₂H₅OH)**: Ethyl alcohol has an -OH (hydroxyl) group, where hydrogen is directly bonded to oxygen. This allows for hydrogen bonding.
- **Acetic Acid (CH₃COOH)**: Acetic acid also has an -OH group, which means it can form hydrogen bonds due to the presence of hydrogen attached to oxygen.
- **Diethyl Ether (C₂H₅OC₂H₅)**: In diethyl ether, the oxygen atom is bonded to two ethyl groups (C₂H₅) but does not have a hydrogen atom directly attached to it. Therefore, it cannot form hydrogen bonds.

3. **Conclusion**:
- Among the compounds listed, diethyl ether (C₂H₅OC₂H₅) does not show hydrogen bonding because there is no hydrogen atom attached to the oxygen atom.

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

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