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2 votes
When preparing 1-bromobutane from 1-butanol and HBr, why

mustit be washed with H2O, cold NaOH and NaCl?

User JohnDel
by
7.9k points

1 Answer

6 votes

Answer:

Answer has been given below

Step-by-step explanation:

  • During reaction of 1-butanol and HBr, some unreacted amount of HBr might present in reaction mixture. Hence cold NaOH is used to neutralize unreacted HBr.
  • Washing with
    H_(2)O is done to remove the salt produced during neutralization i.e. NaBr from organic layer of 1-bromobutane.
  • NaCl is added to remove water from organic layer. Because NaCl is more soluble in water than organic layer.
User Jin Kwon
by
8.4k points
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