Chemistry, asked by doreamon3443, 1 year ago

Why substitution reaction takes place in presence of sunlight?

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Answered by lucky1742

Substitution reactions like chlorination or bromination of alkanes take place only in thepresence of light. ... And free radicals are generated in presence of sunlight or ultraviolet light. UV light breaks down the chlorine or bromine molecule into free radicals and reaction gets initiated.

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