A According to the Hammond Postulate, which of the following is correct? A) The

Question

A According to the Hammond Postulate, which of the following is correct? A) The transition state of an endothermic reaction resembles the reactant more than it resembles the product. B) The intermediate of an endothermic reaction resembles the reactant more than it resembles the product. C) The transition state of an exothermic reaction step resembles the reactant more than it resembles the product. D) All transition states resemble the product more than they resemble the reactant. E) All transition states resemble the reactant more than they resemble the product.

Part B

Draw the structures of the two alkenes that react with HBr to form 1-bromo-1- methylcyclopentane as the major product.

Explanation / Answer

correct statements: C) The transition state of an exothermic reaction step resembles the reactant more than it resembles the product.

According to hammond's postulate, the transition state is close either reactants or products in terms of energy,based on the reaction conditions.For endothermic reactions, the transition state is much close to energy of the product ,and in exothermic reaction step it resembles the reactant more than it resembles the product.

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