8.77

[Annie Lieu-1H]

can someone explain in simple terms what this is asking for and how i would use resonance to solve it

[lauren chung 2f]

When you look at table 8.7, you can see that there are mean bond enthalphies for C-C and C=C, but also another category for the bonds between carbon atoms in benzene. If you find the sum of the mean bond enthalpies for the 3 single bonds and 3 double bonds in benzene, not considering the resonance, you get 2880 kJ/mol. But when you find the sum of the 6 benzene bonds, you get 3108 kJ/mol. The difference between these two values is 228 kJ/mol.