Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction given below.

Question

2ClF3(g) + 2O2(g) Cl2O(g) + 3OF2(g)

I did this:
1530 + 996 - (410 + 570) = 1546.
But the answer was wrong. I don't know where I did wrong.
Thanks!

Answer 1

Bonds broken: 6 Cl-F and 2 O=O.
Bonds formed: 2 Cl-O and 6 O-F
delta H = (sum reactants)-(sum products) = delta H rxn.
It is unclear is this is the reaction you want.