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Explain with the help of an example, the difference between bond dissociation energy and bond energy. |
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Answer» Solution :Bond dissociation energy is the energy required to break 1 MOLEOF bonds. E.g. `H - H(g) rarr 2H(g) ""Delta H = 436 kJ MOL^(-1)` Bond energy is the energy released when 1 mole of bonds are FORMED. Example `2H rarr H_(2)(g) ""Delta H = -436 kJ mol^(-1)` In diatomic molecules both bond dissociation energy and bond energy are EQUAL in MAGNITUDE but opposite in sign. |
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