The reaction of propane with bromine in the p | vedclass

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(A) The reaction of propane $(CH_3-CH_2-CH_3)$ with bromine $(Br_2)$ in the presence of $UV$ light is a free radical substitution reaction. Brominatio

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$2-$bromopropane

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(A) The reaction of propane $(CH_3-CH_2-CH_3)$ with bromine $(Br_2)$ in the presence of $UV$ light is a free radical substitution reaction. Bromination is highly selective compared to chlorination. The secondary $(2^{\circ})$ free radical formed from the middle carbon atom is more stable than the primary $(1^{\circ})$ free radical formed from the terminal carbon atoms. Therefore,the reaction proceeds through the more stable $2^{\circ}$ radical intermediate to yield $2-$bromopropane as the major product. Reaction: $CH_3-CH_2-CH_3 + Br_2 \xrightarrow{h
u} CH_3-CH(Br)-CH_3 + HBr$.

The reaction of propane with bromine in the presence of $UV$ light predominantly forms

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