Respuesta :
Bromine is identical to an alkyl group, thus, on the basis of Markovnikov's rule, the ions of bromide are more probably to combine to the carbocation, which exhibits the majority of the alkyl groups.
The disubstituted alkenes exhibit two alkyl groups in contrast to hydrogen bonded to the alkene. The monosubstituted alkenes only exhibit one alkyl group and the rest of the bonds are for hydrogen.
Bromine adds faster to trisubstituted alkene due to the formation of stable tertiary carbocation.
Further explanation:
A monosubstituted alkene is an alkene in which the doubly bonded carbon atoms are bonded to only one carbon and other atoms are hydrogen atoms excluding each other. A trisubstituted alkene is an alkene in the molecule of which the doubly bonded carbons are bonded to a total of three carbon atoms and other atoms are hydrogen atoms excluding each other.
Bromination reaction:
Any reaction in which bromine is introduced into a molecule is called bromination reaction. For example, bromination of an alkene by electrophilic addition of [tex]{\text{B}}{{\text{r}}_{\text{2}}}[/tex] forms dibromide.
The bromination reaction is one in which [tex]{\text{B}}{{\text{r}}_{\text{2}}}[/tex] is added to a molecule after breaking the carbon to carbon double bond. The bromine molecule adds to neighbouring carbons from opposite faces of the molecule.
Bromine is identical to an alkyl group, thus the ions of bromide are more probably to combine to the carbocation, which has the majority of the alkyl groups. The trisubstituted alkenes have three alkyl groups and one hydrogen atom bonded to the alkene and form tertiary carbocation. The monosubstituted alkenes have only one alkyl group and the rest of the atoms are hydrogen and form primary carbocation. The tertiary carbocation is more stable than primary carbocation. The addition of bromine will occur on stable tertiary carbocation. Therefore, bromine adds faster to trisubstituted alkene than monosubstituted alkene.
The bromination of trisubstituted alkene and monosubstituted alkene is shown in the image attached.
Learn more:
1. Balanced chemical equation: https://brainly.com/question/1405182
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Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Addition reaction
Keywords: Bromine, trisubstituted double bond, tertiary carbocation, bromination, and monosubstituted alkene.
