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Give one test each to distinguish between: (i) Aqueous solution of acetaldehyde and acetone. (ii) Aqueous solution of phenol and benzoic acid. (ii) Aqueous solution of formaldehyde and acetaldehyde. |
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Answer» Solution :(i) Add Tolllens. reagent Acetaldehyde `(CH_(3)CHO)` will give silver mirror whereas ACETONE `(CH_(3)COCH_(3))` will not REACT. (ii) Add neutral `FeCl_(3)` solution. Phenol gives VIOLET colour whereas benzoic ACID gives a BUFF coloured ppt. of ferric benzoate. (iii) Add `I_(2)` and NaOH. Formaldehyde will not react whereas acetaldehye `(CH_(3)CHO)` gives yellow precipatate due to the formation of iodoform. |
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