Q. 25 A5.0( 4 Votes )

Write the product

Answer :

(i) When cyclohexanone reacts with oxime (H2N—OH), it forms:

(ii) When benzaldehyde reacts with conc. NaOH, it forms:

(iii) When CH3COOH is treated with chlorine or phosphorus, it forms Cl—CH2—COOH

(b) (i) To distinguish between the Benzaldehyde and Benzoic acid, we will perform NaHCO3 test:

Benzoic acid being an acid reacts with NaHCO3 solution to produce brisk effervescence due to the evolution of CO2 while benzaldehyde does not give this test.


C6H5CHO + NaHCO3 No effervescence due to evolution of CO2 gas

(ii) To distinguish between Propanal (aldehyde) and Propanone (ketone), we will perform a chemical test by using Tollen’s reagent:

Tollens’ reagent is an ammoniacal solution of silver nitrate and is prepared by adding NH4OH solution to AgNO3 solution till the precipitate of Ag2O first formed just redissolves. When propanal (aldehyde) is heated with Tollens’ reagent, the latter is reduced to metallic silver which deposits on the walls of the test tube as bright silver mirror.

During this reduction, the following reaction occur:

Formation of Tollens’ reagent:

Now, propanal is treated with Tollens’ reagent:

The silver (Ag) thus deposited shines like a mirror. The formation of silver mirror confirms the presence of prpanal.

On the other hand, propanone(ketone) does not give this test. It does not form silver with Tollens’ reagent.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

An aromatic compoChemistry - Exemplar

An alkene ‘A’ (MoChemistry - Exemplar

Write down functiChemistry - Exemplar

An aromatic compoChemistry - Exemplar

When liquid ‘A’ iChemistry - Exemplar