(a) Propose a mechanism for the following reaction:
(b) Use the bond-dissociation enthalpies given in Table 4-2 to calculate the value of ?H°for each step shown in your mechanism. (The BDE for CH2=CHCH2− is about 280 kJ mol, or 67 kcal mol.) Calculate the overall value of for the reaction. Are these values consistent with a rapid free-radical chain reaction?
No comments:
Post a Comment