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

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

(a) 2,4-dinitrophenylhydrazine

(b) aqueous solution of NaHSO3 

(c) Benedict reagent

(d) I2 and NaOH.

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2 Answers

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Best answer

The correct option is: (d) I2 and NaOH.

Explanation:

Acetophenone reacts with NaOH and I2 to give yellow ppt. of CHI3 but benzophenone (C6H5COC6H5) does not. Hence, it can be used to distinguish between them.

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by (10.8k points)
Option (d) is correct

Acetophenone containing CH3CO- group responds to iodoform test forming yellow precipitate of iodoform when it is treated with I2/NaOH. Benzophenone does not respond to this test as it doesn't contain CH3CO- group.
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