Based on the reaction and bond energies listed in the table, would this reaction occur without the addition of energy?
bond: Bond Energy kj/mol:
A-A 432
B-B 239
A-B 427
To determine if the reaction would occur without the addition of energy, we need to calculate the overall change in bond energy.
The bonds broken are A-B and B-B, with a total bond energy of (427 + 239) = 666 kJ/mol.
The bond formed is A-A, with a bond energy of 432 kJ/mol.
The overall change in bond energy is (432 - 666) = -234 kJ/mol.
Since the overall change in bond energy is negative, the reaction would release energy and occur spontaneously without the addition of energy.