Chemistry · Hydrocarbons
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Cyclic bromonium ion is formed when ethene reacts with:
- A
HBr.
- B
HCL.
- C
Br2..
- D
None of these.
When ethene reacts with bromine, the pi bond between the two carbon atoms is broken and the bromine molecule is added across the double bond. This results in the formation of a cyclic intermediate called a bromonium ion, which is a three-membered ring consisting of two carbon atoms and a positively charged bromine atom. The bromonium ion is a highly reactive intermediate that can undergo further reactions, such as nucleophilic attack by a negatively charged species, to form a product. The formation of a cyclic bromonium ion is an example of an electrophilic addition reaction.
Cyclic bromonium ion is not formed when ethene reacts with HBr. Instead, the reaction of ethene with HBr forms a product called bromoethane. The reaction mechanism involves the formation of a carbocation intermediate, which is a positively charged carbon atom, and the subsequent attack of the bromide ion on the carbocation to form the product. This reaction is an example of an electrophilic addition reaction.
When ethene reacts with HCl, the pi bond between the two carbon atoms is broken and the hydrogen and chlorine atoms are added across the double bond. This results in the formation of a cyclic intermediate called a chloronium ion, which is a three-membered ring consisting of two carbon atoms and a positively charged chlorine atom. The chloronium ion is a highly reactive intermediate that can undergo further reactions, such as nucleophilic attack by a negatively charged species, to form a product. The formation of a cyclic chloronium ion is an example of an electrophilic addition reaction.
When ethene reacts with bromine, the pi bond between the two carbon atoms is broken and the bromine molecule is added across the double bond. This results in the formation of a cyclic intermediate called a bromonium ion, which is a three-membered ring consisting of two carbon atoms and a positively charged bromine atom. The bromonium ion is a highly reactive intermediate that can undergo further reactions, such as nucleophilic attack by a negatively charged species, to form a product. The formation of a cyclic bromonium ion is an example of an electrophilic addition reaction.
This option is incorrect.
Tagged under Chemistry · Hydrocarbons · 2021