Question

Question #3ae78

Answer 1

`DeltaH=193(kJ)/(mol)`

Explanation:

The formation of individual bromine atom at a gaseous state `Br(g)` would result from breaking the covalent bond of the bromine molecule `Br_2(g)` according to the following reaction:

`Br_2(g)->2Br(g)" " "DeltaH=193(kJ)/(mol)`

Thus, for this reaction to occur, enough energy should be supplied to break the `Br-Br` bond, which is going to be equal to the `DeltaH_f` of a bromine atom.

So, the bond dissociation energy of a `Br-Br` bond is equal to:

`DeltaH=193(kJ)/(mol)`