Question

Use the bond energies provided to estimate deltaH rxn for the reaction below.

2 Br2(l) + C2H2(g) ---> C2H2Br4(l)

DeltaHrxn = ?

Bond Bond Energy (kJ/mol) Bonds Broken Bonds Formed

Br-Br	193
C:::C	837
C-C	347
C-Br	276
C-H	414

I did not know how to work this problem out on our midterm and since our final is cumulative I need to understand this. Can you please give me a step by step procedure how to work this out? Thank you.

Answer 1