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JEE Advanced levelSingle correct optionDifficulty 3 of 3nc017

In the balanced equation for Hofmann bromamide degradation of with and aqueous , the number of moles of used per mole of amide and the carbon-containing inorganic by-product are, respectively:

  1. A2 mol and
  2. B4 mol and
  3. C2 mol and
  4. D4 mol and gas

Answer: B

The balanced equation is . Four moles of are consumed. The carbonyl carbon leaves as carbonate, since would be absorbed by the excess alkali.
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