Question #3ae78

1 Answer
Sep 2, 2016

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)