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Bond energy of covalent O-H bond in wa...

Bond energy of covalent `O-H` bond in water is

A

1. Greater than bond energy of H - bond

B

2. Equal to bond energy of H - bond

C

3. Less than bond energy of H - bond

D

4. None of these

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The correct Answer is:
To determine the bond energy of the covalent O-H bond in water, we can follow these steps: ### Step-by-Step Solution: 1. **Understand Bond Energy**: Bond energy is defined as the amount of energy required to break one mole of a bond in a molecule in the gas phase. For the O-H bond in water, we are specifically interested in the energy required to break the O-H bond. 2. **Identify the Type of Bond**: The O-H bond in water (H₂O) is a covalent bond. This means that the bond is formed by the sharing of electrons between the oxygen atom and the hydrogen atoms. 3. **Compare with Hydrogen Bonds**: It is important to note that water also exhibits hydrogen bonding, which is an intermolecular force that occurs between molecules. Hydrogen bonds are generally weaker than covalent bonds. 4. **Covalent Bond Strength**: The bond energy of a covalent O-H bond is significantly higher than that of hydrogen bonds. This is because covalent bonds involve the sharing of electrons, while hydrogen bonds are merely attractions between molecules. 5. **Conclusion**: Therefore, the bond energy of the covalent O-H bond in water is greater than the bond energy of hydrogen bonds. ### Final Answer: The bond energy of the covalent O-H bond in water is greater than the bond energy of hydrogen bonds. ---
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