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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3co219

Select the correct statements about decarboxylative reactions of sodium or silver butanoate.

  1. AKolbe electrolysis of aqueous sodium butanoate gives hexane at the anode
  2. BSodium butanoate heated with soda lime gives butane
  3. CSilver butanoate with in gives 1-bromopropane
  4. D is evolved at the cathode during Kolbe electrolysis

Answer: A, C, D

Hunsdiecker reaction of gives 1-bromopropane. Kolbe coupling of two propyl radicals gives hexane at the anode, and hydrogen is evolved at the cathode. Soda lime gives propane (not butane), because is replaced by H.
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