Question
1. An O=O bond has a bond energy of 498 kJ/mol. a. How much energy is required to break the bond? b. How much energy will the bond's surroundings gain or lose when the bond is broken
Answers
GPT-4o mini
To analyze the energy involved in breaking an O=O bond, we can address each question:
### a. Energy required to break the bond
The bond energy of a bond is defined as the amount of energy required to break that bond in one mole of the substance. Therefore, to break one O=O bond, you would require:
**Energy required = 498 kJ/mol.**
This means that to break one mole of O=O bonds, you would need to supply 498 kJ of energy.
### b. Energy gained or lost by the surroundings
When a bond is broken, the system (the molecules involved) absorbs energy from the surroundings. Consequently, the surroundings lose that same amount of energy.
Thus, when the O=O bond is broken:
- The surroundings will **lose** 498 kJ of energy for every mole of O=O bonds broken.
### Summary:
- a. Energy required to break the bond: **498 kJ/mol.**
- b. Energy lost by the surroundings when the bond is broken: **498 kJ/mol.**
### a. Energy required to break the bond
The bond energy of a bond is defined as the amount of energy required to break that bond in one mole of the substance. Therefore, to break one O=O bond, you would require:
**Energy required = 498 kJ/mol.**
This means that to break one mole of O=O bonds, you would need to supply 498 kJ of energy.
### b. Energy gained or lost by the surroundings
When a bond is broken, the system (the molecules involved) absorbs energy from the surroundings. Consequently, the surroundings lose that same amount of energy.
Thus, when the O=O bond is broken:
- The surroundings will **lose** 498 kJ of energy for every mole of O=O bonds broken.
### Summary:
- a. Energy required to break the bond: **498 kJ/mol.**
- b. Energy lost by the surroundings when the bond is broken: **498 kJ/mol.**