Chlorination of Alkanes (AQA A-Level Chemistry): Flashcards

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Chlorination of Alkanes
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Type of reaction: alkanes + chlorine with UV

Free radical substitution

Condition needed for alkane chlorination

UV light

Type of bond breaking in initiation step

Homolytic fission

Product of Cl2Cl_2 photodissociation in initiation

2Cl•2Cl• (two chlorine free radicals)

Feature of each Cl•Cl• radical

One unpaired electron

Nature of propagation stage

Chain reaction

1st propagation: Cl•+CH4Cl• + CH_4 forms

HCl+CH3•HCl + CH_3•

2nd propagation: CH3•+Cl2CH_3• + Cl_2 forms

CH3Cl+Cl•CH_3Cl + Cl•

What happens in termination step

Two free radicals combine to form stable molecule

Overall: CH4+Cl2CH_4 + Cl_2 with UV forms

CH3Cl+HClCH_3Cl + HCl

Explore AQA A-Level Chemistry Revision Notes by Topics

Introduction to Organic Chemistry

Alkanes

Halogenoalkanes

Alkenes

Alcohols

Organic Analysis

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Introduction to Organic Chemistry

Alkanes

Halogenoalkanes

Alkenes

Alcohols

Organic Analysis

Explore AQA A-Level Chemistry Quizzes by Topics

Introduction to Organic Chemistry

Alkanes

Halogenoalkanes

Alkenes

Alcohols

Organic Analysis

Explore AQA A-Level Chemistry Exam Questions by Topics

Introduction to Organic Chemistry

Alkanes

Halogenoalkanes

Alkenes

Alcohols

Organic Analysis

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