what is the role of methanol and con. H2sSo4 in botsche's reagent
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2,4-DNPH is usually dissolved in an alcoholic solvent, together with sulfuric acid, when used as a reagent to detect aldehydes and ketones (Brady's reagent). The sulfuric acid is a source of H+, which catalyses the reaction between the hydrazine group and the carbonyl compound, as depicted in the mechanism below:
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