MCQ
Addition of $HCl$ does not obey antimarkownikoff’s rule because
- AIt is a strong acid
- BIt is a gas
- ✓Its bond energy is high
- DIts bond energy is less
✓
Answer
Correct option: C.
Its bond energy is high
c
Antimarkownikoff's addition takes place in the presence of $H _2 O _2$ and the formation of free radicals take place. But in case of $HCl$, the $H - Cl$ bond has very high energy and large amount of energy is required for the formation of $H$ and $Cl$ free radicals, hence the reaction is endothermic. Such large amount of energy is not available and formation of free radicals does not take place.
Antimarkownikoff's addition takes place in the presence of $H _2 O _2$ and the formation of free radicals take place. But in case of $HCl$, the $H - Cl$ bond has very high energy and large amount of energy is required for the formation of $H$ and $Cl$ free radicals, hence the reaction is endothermic. Such large amount of energy is not available and formation of free radicals does not take place.
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