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The reaction, CH₂ = CH-CH₃ + HBr → CH₃CHBr - CH₃ is
- a)Nucleophilic addition
- b)Electrophilic substitution
- c)Electrophilic addition
- d)Free radical addition
Correct answer is option 'C'. Can you explain this answer?
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The reaction, CH = CH-CH + HBr → CHCHBr - CH isa)Nucleophilic add...
Electrophilic Addition:
In the given reaction, CH = CH-CH + HBr → CHCHBr - CH, a hydrogen bromide (HBr) molecule adds across the double bond of ethylene (CH2=CH2) to form 1-bromoethane (CH3CH2Br). This reaction involves the addition of an electrophile (H+) to the double bond, leading to the formation of a new C-Br bond.
Mechanism:
1. Initially, the pi bond in ethylene acts as a nucleophile and attacks the hydrogen atom in HBr, forming a carbocation intermediate.
2. The bromide ion then attacks the carbocation, resulting in the formation of 1-bromoethane.
Key Points:
- This reaction is classified as electrophilic addition because it involves the addition of an electrophile (H+) to the double bond.
- The electrophilic addition reaction typically occurs with unsaturated hydrocarbons like alkenes and alkynes.
- The product formed in this reaction is a halogenated alkane, where the halogen atom replaces one of the hydrogen atoms in the alkene.
- Electrophilic addition reactions are common in organic chemistry and play a significant role in the synthesis of various organic compounds.
Therefore, the given reaction CH = CH-CH + HBr → CHCHBr - CH is an example of electrophilic addition.
In the given reaction, CH = CH-CH + HBr → CHCHBr - CH, a hydrogen bromide (HBr) molecule adds across the double bond of ethylene (CH2=CH2) to form 1-bromoethane (CH3CH2Br). This reaction involves the addition of an electrophile (H+) to the double bond, leading to the formation of a new C-Br bond.
Mechanism:
1. Initially, the pi bond in ethylene acts as a nucleophile and attacks the hydrogen atom in HBr, forming a carbocation intermediate.
2. The bromide ion then attacks the carbocation, resulting in the formation of 1-bromoethane.
Key Points:
- This reaction is classified as electrophilic addition because it involves the addition of an electrophile (H+) to the double bond.
- The electrophilic addition reaction typically occurs with unsaturated hydrocarbons like alkenes and alkynes.
- The product formed in this reaction is a halogenated alkane, where the halogen atom replaces one of the hydrogen atoms in the alkene.
- Electrophilic addition reactions are common in organic chemistry and play a significant role in the synthesis of various organic compounds.
Therefore, the given reaction CH = CH-CH + HBr → CHCHBr - CH is an example of electrophilic addition.
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The reaction, CH = CH-CH + HBr → CHCHBr - CH isa)Nucleophilic additionb)Electrophilic substitutionc)Electrophilic additiond)Free radical additionCorrect answer is option 'C'. Can you explain this answer?
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