Free Bond Energy MCQs with Answers
22 Bond Energy MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Bond energy is the energy needed to break one mole of a particular covalent bond in gaseous molecules, while bond formation releases energy. Reaction enthalpy is estimated by subtracting the total energy of bonds formed from bonds broken, with attention to average bond energies and their limitations for specific molecules.
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22 questions · page 2 of 2
21. What happens to the molecule when its atoms are brought closer than the bond length between them?
- A. Molecule becomes unstable
- B. Molecule becomes more stable
- C. Molecule starts vibrating
- D. Stability of the molecule remains unchanged.
Explanation: Bond length is defined as the distance between two nuclei of atoms in a covalent bond.
Correct answer: Molecule becomes unstable- A. Atoms in the O2 molecules are held by a double bond
- B. 0-0 bonds are strong
- C. The amount of metal in the anode
- D. All of the above
Explanation: Atoms in an Oxygen molecule are held together by a double bond. O-O single bonds have a bond length of 1.48 angstrom, while O-O double…
Correct answer: Atoms in the O2 molecules are held by a double bond