Of the four choices shown, which is likely to be a major product of the reaction below?

Question

Quizplus · Accepted Answer

In the given reaction, the reactant is an alkene and the reagent is a hydrogen halide (HBr). The reaction follows Markovnikov's rule which states that the hydrogen atom of the reagent adds to the carbon atom that already has a higher number of hydrogen atoms attached to it. Hence, in this case, the bromine atom will add to the less substituted carbon atom of the alkene (i.e., the carbon atom with only one hydrogen atom attached to it) to form the major product I. Choices II, III, and IV are either not formed or are formed as minor products.

Of the Four Choices Shown, Which Is Likely to Be