Advertisements
Advertisements
Question
Give a simple chemical test to distinguish between the following pair of compounds :
CH3CH2CHO and CH3CH2COCH3
Advertisements
Solution
2-Butanone has a methyl group attached to carbonyl carbon unlike propanal. Hence, it can give iodofom test.
RELATED QUESTIONS
Distinguish between:
C6H5-COCH3 and C6H5-CHO
Predict the products of the following reactions :
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
Give a simple chemical test to distinguish between the following pair of compounds:
Pentan-2-one and Pentan-3-one
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.
Ammonical silver nitrate solution is called
A hydrocarbon (A) with molecular formula C5H10 on ozonolysis gives two products (B) and (C). Both (B) and (C) give a yellow precipitate when heated with iodine in presence of NaOH while only (B) give a silver mirror on reaction with Tollen’s reagent.
- Identify (A), (B) and (C).
- Write the reaction of B with Tollen’s reagent.
- Write the equation for iodoform test for C.
- Write down the equation for aldol condensation reaction of B and C.
An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is:
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.
