Use bond energy values to estimate delta H fro the following reaction in the gas phase:

Question

C2H4 + Br2 -> CH2BrCH2Br

I am in dire need of help! Thank you

Answer 1

Look up the bond energies for each bond.
Then bond energies broken - bond energies formed = dH rxn
Here is a tutorial + bond energies listed.
http://www.kentchemistry.com/links/Kinetics/BondEnergy.htm