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  • Give simple chemical tests to distinguish between the following pairs of compounds. (vi) Benzaldehyde and Acetophenone

Q 12.13     Give simple chemical tests to distinguish between the following pairs of compounds.

        (vi)     Benzaldehyde and Acetophenone

Answers (1)

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Both can be distinguished by-

  1. Iodoform test
    In acetophenone, methyl ketone group present.So it give positive iodoform test by forming a yellow ppt.
  2. Tollen's test
    Aldehyde give positive tollens test. Benzaldehyde reduces the tollens reagent and give red brown ppt.but acetophenone does  not give this test.

Tollen's test – aldehydes give a positive Tollen's test. Benzaldehyde is an aldehyde. Therefore, it reduces Tollen's reagent to give a reddish-brown precipitate. Acetophenone is a ketone and therefore gives a negative test.

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manish

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