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why bromine give monohalogenated product in HVZ reaction while chlorine give dihalogenated or trihalogenated product in HVZ reaction ???????????????plz explain

why bromine give monohalogenated product in HVZ reaction while chlorine give dihalogenated or trihalogenated product in HVZ reaction ???????????????plz explain

Grade:12th pass

1 Answers

Vikas TU
14149 Points
4 years ago
HVZ Reaction is stated as  :When carboxylic acid reacts with chlorine or Bromine in the presence of Red phosphorus, the alpha hydrogen atoms are replaced by haloogen atoms.
Bromine gives Monohalogenated product because monohalogenated compound is much nucleophilic , so the reaction stops at this stage.
Acetic acid can react with chlorine to form dichloracid or trichloroacid , so , chlorine give dihalogenated or trihalogenated product.
 

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