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The molar standard enthalpy/heat of reaction may be defined as the energy/heat change when one mole of products is formed at standard conditions
A chemical reaction involves the reactants forming products. For the reaction to take place the bonds holding the reactants must be broken so that new bonds of the products are formed. i.e.
A-B + C-D -> A-C + B-D
The energy required to break one mole of a (covalent) bond is called bond dissociation energy.
The SI unit of bond dissociation energy is kJmole-1.
The higher the bond dissociation energy the stronger the (covalent)bond
Wilfykil answered the question on February 19, 2019 at 12:50
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