AP EAMCET · Chemistry · Hydrocarbons
Which of the following reactions proceeds via a secondary free radical?
- B \(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2 \underset{\text { UV light }}{\stackrel{\mathrm{HBr}}{\longrightarrow}}\) \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}\)
- C \(\mathrm{C}_6 \mathrm{H}_6 \stackrel{\mathrm{Br}_2 / \mathrm{FeBr}_3}{\longrightarrow} \mathrm{C}_6 \mathrm{H}_5 \mathrm{Br}\)
- D \(\mathrm{C}_6 \mathrm{H}_6 \underset{\text { UV light }}{\stackrel{\mathrm{Br}_2}{\longrightarrow}} \mathrm{CH}_3-\mathrm{CH}_2 \mathrm{Br}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2 \underset{\text { UV light }}{\stackrel{\mathrm{HBr}}{\longrightarrow}}\) \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{H}-\mathrm{Br} \stackrel{\mathrm{UV}}{\longrightarrow} \dot{\mathrm{H}}+\mathrm{Br}\). \(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2+\mathrm{B} \dot{\mathrm{r}} \longrightarrow \mathrm{CH}_3-\mathrm{CH}-\mathrm{CH}_2 \mathrm{Br}\)…
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