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The reaction of C6H5CH = CHCH3 with HBr produces:

1. C6H5CH2CHCH3Br
2. C6H5CH2CH2BrCH=CHCH3
3. C6H5Br
4. C6H5CHCH2CH3Br

Correct answer: C6H5CHCH2CH3Br

Solution

The reaction involves the addition of HBr to an alkene. Following Markovnikov's rule, the H atom adds to the carbon with more hydrogens, and Br adds to the other carbon, forming C6H5CHCH2CH3Br.

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