Advertisements
Advertisements
Question
What is the composition of Fehling's reagent?
Advertisements
Solution
Fehling's solution is a mixture of an alkaline solution of copper(II) sulphate (CuSO4) containing sodium potassium tartrate (Rochelle salt- KNaC4H4O6.4H2O).
APPEARS IN
RELATED QUESTIONS
Distinguish between:
C6H5-COCH3 and C6H5-CHO
Give a simple chemical test to distinguish between the following pair of compounds :
CH3CH2CHO and CH3CH2COCH3
Give a simple chemical test to distinguish between the following pair of compounds:
Acetophenone and Benzophenone
Give a simple chemical test to distinguish between the following pair of compounds:
Phenol and Benzoic acid
An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.
Acetaldehyde cannot show?
Choose the reaction which is not possible:
An organic compound 'A' with molecular formula C5H8O2 is reduced to n-pentane with hydrazine followed by heating with NaOH and glycol. 'A' forms a dioxime with hydroxylamine and gives a positive iodoform and Tollen's test. Identify 'A' and give its reaction for iodoform and Tollen's test.
An organic compound 'A' with the molecular formula C4H8O2 undergoes acid hydrolysis to form two compounds 'B' and 'C'. Oxidation of 'C' with acidified potassium permanganate also produces 'B'. Sodium salt of 'B' on heating with soda lime gives methane.
- Identify 'A', 'B' and 'C'.
- Out of 'B' and 'C', which will have higher boiling point? Give reason.
