Describe chemical test/s you could use to determine the identity of a carbonyl compound.
Use Brady's Reagent (2,4-DNPH) to test for the presence of the C=O bond in a carbonyl compound. The formation of a yellow precipitate indicates a positive test result. Then determine the melting point of the product to identify the original carbonyl.
Alternatively you can use Tollen's reagent to determine whether a carbonyl is a ketone or an aldehyde. As Tollen's is a (weak) oxidising agent, there will be no reaction upon addition to a ketone, but a silver precipitate will form with an aldehyde.
MB
Related Chemistry A Level answers
All answers ▸What 2 reagents are required to form NO2+ (state conditions)? Write an equation for this reaction.
Order the relative base strength of phenyl amine, methyl amine and methylphenyl amine and outline your reasoning.
Describe a simple way to distinguish between aqueous solutions of potassium nitrate (KNO3) and potassium sulfate (K2SO4) using one test tube reaction
Given the following equilibrium: H2O + H2O <-> H3O+ + OH- and the Kw = 10^-14, determine the concentration of OH- species after the addition of 1 mmol of HCl to 1 L of neutral water.