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

Question

The reagents which can be used to distinguish acetophenone from benzophenone is (are) (A) 2,4-dinitrophenyl hydrazine (B) aqueous solution of NaHSO3 (C) Benedict reagent (D) l2 and Na2 CO3

Tardigrade Admin · Accepted Answer

The structures of acetophenone and benzophenone are

When acetophenone containing

C H_{3} - C ∣∣ O -

unit, is treated with

I_{2}

and

N a_{2} C O_{3}

it forms yellow precipitate of

C H I_{3}

whereas benzophenone does not give this test. Acetophenons gives iodoform test due to presence of

- COC H_{3}

group.

Q. The reagents which can be used to distinguish acetophenone from benzophenone is (are)

2,4-dinitrophenyl hydrazine

aqueous solution of $N a H S O_{3}$

Benedict reagent

$l_{2}$ and $N a_{2} C O_{3}$

Q. The reagents which can be used to distinguish acetophenone from benzophenone is (are)

2,4-dinitrophenyl hydrazine

aqueous solution of NaHSO3​

Benedict reagent

l2​ and Na2​CO3​

aqueous solution of $N a H S O_{3}$

$l_{2}$ and $N a_{2} C O_{3}$