Question
How does the reaction with NaHCO3 helps in purifying CH3CHO?
Solution
CH3CHO is a carbonyl compound and gives an addition adduct with NaHSO3. The addition adduct (hydrogen sulphite) is water soluble and can be converted back to the original carbonyl compound.
This can be achived by the decomposing the adduct by acid to generate pure ethanal leaving behind the impurities.
This can be achived by the decomposing the adduct by acid to generate pure ethanal leaving behind the impurities.
