Question

What product(s) (excluding stereoisomers) is/are formed when y is heated with br2?

Answer 1

The major product formed when y is heated with Br2 is 1,2-dibromo compound.

Step-by-step explanation:

When y is heated with Br2, the major product formed is 1,2-dibromo compound. This is because Br2 adds across an alkene in an anti-addition manner, resulting in the formation of a vicinal dihalide. The reaction proceeds via a bromonium ion intermediate.

For example, when ethene (y) is heated with Br2, the major product formed is 1,2-dibromoethane. The reaction can be represented by the following equation:

CH2=CH2 + Br2 → CH2BrCH2Br

Answer 2

When the molecule undergoes chlorination with Cl2 on heating, the hydrogen atom of the alkyl group is replaced by the chlorine atom and form chloroalkanes. The molecule X containes three types of alkyl halides, therefore three different types of chloroalkanes are formed by the replacement of hydrogem atom linked to these alkyl groups. Thus the three different types of chloroalkanes are formed - primary, secondary, and thertiary chloroalkane. Chlorination is not selective so a mixture pf products results. The products formed by the reaction of the molecule with Y with Cl2 are shown on the attached file.