Tollen's reagent is used in detection of unsaturation.
NaHSO3 is used in detection of carbonyl compound.
Tollen's reagent is used to detect aldehydic
group. Tollen's reagent is an ammonical solution
of silver nitrate. When aldehyde is added to
Tollen's reagent, silver oxide is reduced to metallic
silver which deposits as mirror.
RCHO + Ag2O $$ \to $$ RCOOH + 2Ag
Questions Asked from Some Basic Concepts of Organic Chemistry
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