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Question: Answered & Verified by Expert
The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)
ChemistryAldehydes and KetonesBITSATBITSAT 2011
Options:
  • A 2,4 - dinitrophenylhydrazine
  • B aqueous solution of $\mathrm{NaHSO}_{3}$
  • C benedict reagent
  • D $\mathrm{I}_{2}$ and $\mathrm{NaOH}$
Solution:
2916 Upvotes Verified Answer
The correct answer is: $\mathrm{I}_{2}$ and $\mathrm{NaOH}$
$\mathrm{I}_{2}$ and $\mathrm{NaOH}$ react with acetophenone $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COCH}_{3}\right)$ to give yellow ppt. of $\mathrm{CHI}_{3}$
but benzophenone $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COC}_{6} \mathrm{H}_{5}\right)$ does not
give haloform test.

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