Benzene is more stable and less reactive than would be predicted from its Kekul structures. Use the

Benzene is more stable and less reactive than would be predicted from its Kekulé structures. Use the data in Table 4E.3 to calculate the lowering in molar energy when resonance is allowed between the Kekulé structures of benzene.

Transcribed Image Text:

TABLE 4E.3 Mean Bond Enthalpies Bond C-H C-C C=C CC* C=C C-N C-F C-Cl C-Br AHB/(kJ.mol-¹) 412 348 612 518 837 360 743 305 484 338 276 Bond C-I N-H N-N N=N N-O N=O N-F N-Cl O-H 0-0 AHB/(kJ.mol-¹) 238 388 163 409 210. 630. 270. 200. 463 157