6. Thermodynamics and Kinetics
Enthalpy
10:58 minutes
Problem 6
Textbook Question
Textbook QuestionPropose a mechanism for the following reaction: a. H2C=CH—CH3 + Br2 hv—> H2C=CH—CH2Br + HBr b. Use the bond-dissociation enthalpies given in [TABLE 4-2]
(page 167) to calculate the value of ΔH° for each step shown in your mechanism. (The BDE for CH2=CHCH2―Br is about 280 kJ/mol, or 67 kcal/mol.) Calculate the overall value of ΔH° for the reaction. Are these values consistent with a rapid free-radical chain reaction?Verified Solution
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