8.10. Offer an explanation for the following observations: a. Hydrocarbon 10-A (pK 14) is considerably more acidic than 10-B (pK ≈22). H. H HH 10-A 10-B b. Hydrocarbon 10-C has an unusually small separation of its oxidation and reduction potentials, as established by electrochemical measurements. It is both easily reduced and easily oxidized. Both mono- and dications and mono- and dianions can be readily formed. 88 10-C The barrier for rotation about the marked bond in 10-D is only about 14 kcal/mol. CAC- O 10-D