B: B:What is likely to be observed for a positive test for the Schiff\'s test? C

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B:

B:What is likely to be observed for a positive test for the Schiff's test?

Chemical classification tests such as Tollen's test, Schiff's test, the iodoform test, and derivatization with 2,4-dinitrophenylhydrazine can discern the difference between aldehydes and ketones, and also provide partial structure determination. Match the hazard label to the named reagent. Drag and drop the appropriate hazard label(s) into the bin associated with each reagent. Labels may be used more than once. Tollen's test reagent Schiffs test reagent lodoform test reagent 2,4-DNP test reagent Irritant Toxic Flammable , Slains Skin Corrosive Carcinogen or cancer suspect agent

Explanation / Answer

Tollen's reagent is ammonical silver nitrate .

Silver nitrate stains skin, very toxic and corrosive. called lunar caustic.

Schiff's reagent is p-rosaniline hydrochloride dye decolorised with SO2 or meta bisulphite. It is toxic, stains skin .

Iodoform test uses iodine , which is irritant, stains skin and corrosive.

2,4 DNP is 2,4 di nitrophenylhydrazine which is very toxic and possible carcinogen.

B:

A positive test with Schiff,s reagent is restoration of pink/magenta color of the dye with aldehydic reagents.

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