The bond energy is the energy required to

Options

A. Dissociate one mole of the substance
B. Dissociate bond in 1 kg of the substance
C. Break one mole of similar bonds
D. Break bonds in one mole of substance

Explanation

**Step-by-Step Solution:**

1. **Understanding Bond Energy**:
Bond energy is defined as the amount of energy required to break a bond between two atoms in a molecule. It is a measure of the strength of the bond.

2. **Breaking Bonds**:
When a bond is broken, the atoms that were bonded together become individual atoms. For example, in the case of hydrogen gas (H₂), breaking the bond results in two separate hydrogen atoms (H + H).

3. **Energy Requirement**:
The energy required to break one mole of a specific type of bond in a molecule is referred to as the bond energy. This energy is typically expressed in kilocalories or kilojoules per mole.

4. **Example Calculation**:
For instance, if the bond energy of H₂ is given as +100 kilocalories per mole, this means that 100 kilocalories of energy is needed to break one mole of H₂ into two hydrogen atoms.

5. **Conclusion**:
Therefore, the bond energy is the energy required to break one mole of similar bonds in a molecule to form neutral atoms.

**Final Answer**: The bond energy is the energy required to break one mole of similar bonds in a molecule into their individual atoms.

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