Electrophilic Addition of HBr to Ethylene

C2H4 + HBr → C2H5Br

개요

Ethylene undergoes electrophilic addition with hydrogen bromide to form bromoethane. The pi electrons of the C=C double bond attack the electrophilic hydrogen of HBr, forming a carbocation intermediate that is then attacked by bromide. For unsymmetrical alkenes, Markovnikov's rule predicts the major product.

참여 물질

역할 물질 계수 상태
반응물 Ethylene C₂H₄ 1 (g)

일상 속 예시

This type of addition reaction is how the chemical industry converts simple alkenes from petroleum cracking into useful alkyl halides.

산업적 중요성

알킬 할라이드 합성의 기본 방법으로, 의약품 및 농약 중간체 제조에 활용됩니다. 폴리머 개질 및 유기합성 전구체 생산에 중요합니다.

성질

유형
Organic
가역 반응
아니오
에너지
발열
ΔH
-53.0 kJ/mol

관련 반응

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

Frequently Asked Questions

What is the equation for Electrophilic Addition of HBr to Ethylene?
The balanced equation is: C₂H₄ + HBr → C₂H₅Br.
What type of reaction is Electrophilic Addition of HBr to Ethylene?
Electrophilic Addition of HBr to Ethylene is a organic reaction.
Is Electrophilic Addition of HBr to Ethylene exothermic or endothermic?
Electrophilic Addition of HBr to Ethylene is exothermic (releases energy). The enthalpy change (ΔH) is -53.0 kJ/mol.