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List how the qualitative tests (Tollens' silver mirror test, schiff test, and haloform reaction and iodoform...

List how the qualitative tests (Tollens' silver mirror test, schiff test, and haloform reaction and iodoform test) can be used to distinguish acetaldehyde and 2-propanone.

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Answer #1
compound Silver mirror test Schiff's test haloform raeaction

acetaldehyde

CH3CHO

 positive positive

positive

2-propanone

CH3COCH2CH3

 negative negative positive

Thus 2-propanone being a ketone does not respond to Schif's test (no silver miror forms) or Schiff's test (no pink coloration).

Both give 2,4-DNP test and iodoform test which confirm the presence of carbonyl group in both.

Schiff's and Tollens' test are given by aldehydes only. Thus we can diffeentiate the compounds easily.

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