Question

The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)

• A. 2,4- dinitrophenylhydrazine
• B. aqueous solution of $NaHSO_3$
• C. benedict reagent
• D. $I_2$ and $Na_2CO_3$

Answer 1

Answer: (D)

$I_2$ and $Na_2CO_3$

Answer 2

$I_2$ and $Na_2CO_3$ react with acetophenone $(C_6H_5COCH_3)$ to give yellow ppt. of $CHI_3$ but benzophenone $(C_6H_5COC_6H_5)$ does not and hence can be used to distinguish between them.