Which of the following reactions does not show the correct products of the reaction?
A
CH3−CH=CH2HBr−−−−−→PeroxideCH3−CH2−CH2Br
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B
CH3−CH=CH2HCl−−−−−→PeroxideCH3−CH2−CH2Cl
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C
CH3−CH=CH2HBr−−−→CH3−Br|CH−CH3
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D
CH3−CH=CH2HCl−−→CH3−CH|Cl−CH3
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Solution
The correct option is CCH3−CH=CH2HCl−−−−−→PeroxideCH3−CH2−CH2Cl
Presence of peroxide does not make any difference while reacting with HCl. Only addition of HBr gives anti-Markownikoff's product in presence of peroxide. HCl gives Markownikoff's product only. This is because HCl bond is stronger than HBr and is not cleaved by free radicals.