what is a simple test to detect the presence of a carbonyl and to identify it?
A carbonyl is either a ketone or an aldehyde. In order to see whether the carbonyl group is present (C double bond O), 2,4-dinitrophenylhydrazine must be used. If an orange/yellow precipate is formed, then a carbonyl group is present. Then, you must purify the precipitate by recrystalisation and measure its melting point. then compare the melting point to known values to determine the compounds identity.
ZM
Related Chemistry A Level answers
All answers ▸A reaction, A + B -> C, is considered second order with respect to A and first order with respect to B. What is the effect of simultaneously doubling the concentration of A and B on the rate of reaction?
3.786g of hydrated zinc sulphate, ZnSO4•xH2O, is heated to remove all water of crystallisation. The mass of anhydrous ZnSO4 formed is 2.122g. What is the formula of the hydrated zinc sulphate?
Explain the trends in ionisation energies across the 2nd period of the periodic table?
Which are the strongest interactions between molecules