a) True or False. According to the Hammond Postulate transition state structures

ID: 1016044 • Letter: A

Question

a) True or False. According to the Hammond Postulate transition state structures for endothermic reactions resemble those of the reactants.

b) True or False. The kinetic product and thermodynamic product of 1-pentene with NBS are the same (neglecting stereoisomers).

c) True of False. Free radical chlorination of methane is endothermic in its 1st propagation step as it generates a methyl radical and HCl.

d) True or False. All termination steps in free radical halogenation are both favorable from an enthalpic and entropic perspective.

a. false ( in the endothermic reaction the transition state is closer to the product not to the reactant so TS lokes like product)

b. true ( in kinetic or thermodynamic both condition the product is allylated bromo derivative)

c. true ( the first propagation step is highly endothermic)

d. false ( termination step is entropycally disfavoured as two radicals cobines to form one species)

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