A friend is calculating the energy of reaction for a combustion reaction using bond energies, and the calculations are returning a positive AH. What, if anything, has
your friend done incorrectly?
A) Bond energies don't apply to combustion reactions and should not be used.
B) He or she used the wrong table of bond energies.
C)
Nothing, a combustion reaction should have a positive AH.
D)
He or she may have subtracted the bond energies for the reactants from the
products.