The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are. i. 2,4 -dinitrophenylhydrazine ii. aqueous solution of NaHSO 3 iii. Benedict reagent iv. I 2 and NaOH v. Tollen's reagent vi. Fehling's solution

Question

The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are. i. 2,4 -dinitrophenylhydrazine ii. aqueous solution of NaHSO 3 iii. Benedict reagent iv. I 2 and NaOH v. Tollen's reagent vi. Fehling's solution (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

i. 2,4-DNP test: Both acetophenone and benzophenone give this test as both contain carbonyl group. ii. NaHSO 3 test: Both acetophenone and benzophenone contain bulky groups thus due to steric hindrance they do not react with NaHSO 3 to form corresponding addition product, iii. Benedict's test: Only aliphatic aldehydes give this test. iv. Iodoform test ( NaOH + I 2): Since only acetophenone ( C 6 H 5 COCH 3) is a methyl ketone, it gives yellow precipitate on reacting with NaOH and iodine. Thus, this test can distinguish acetophenone from benzophenone. v. Tollen's reagent: Both acetophenone and benzophenone do not get oxidised by Tollen's reagent. vi. Fehling's solution: Both acetophenone and benzophenone do not get oxidised by Fehling's solution.

Q. The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are________. i. 2,4 -dinitrophenylhydrazine ii. aqueous solution of NaHSO3​ iii. Benedict reagent iv. I2​ and NaOH v. Tollen's reagent vi. Fehling's solution

Q. The reagent(s) which can be used to distinguish acetophenone from benzophenone is/are________.
i. $2, 4$ -dinitrophenylhydrazine
ii. aqueous solution of $N a H S O_{3}$
iii. Benedict reagent
iv. $I_{2}$ and $N a O H$
v. Tollen's reagent
vi. Fehling's solution