Thursday, August 11, 2011

Why do esters and carboxylic acids not form precipitates when reacting with Brady's Reagent?

When testing for C=O groups in a compound with Brady's Reagent (2,4-dinitrophenylhydrazine, methanol and sulfuric acid solution), why is it that carboxylic acids and esters do not form a precipitate whilst aldehydes and ketones do?

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