Question

2. Explain the working of the following with an example.
Ans...​

Answer 1

Answer:

(i) Kolbes reaction.

It is a decarboxylative dimerisation of two carboxylic acids (or carboxylate ions) to form carbon carbon bond of alkane.

2RCOO

−

−2e

−

−2CO

2

R−R

(ii) Reimer-Tiemann reaction.

It involves the ortho-formylation of phenols. Phenol is converted to salicylaldehyde.

C

6

H

5

−OH

CHCl

3

3KOH

o−HO−C

6

H

4

−CHO

(iii) Williamson ether synthesis.

Sodium alkoxide reacts with alkyl halide to form an ether.

C

2

H

5

ONa+C

2

H

5

Cl→C

2

H

5

−O−C

2

H

5

+NaCl

(iv) Unsymmetrical ether.

Two different alkyl groups are attached to O atom. The general formula is R−O−R

′

. An example is ethyl methyl ether CH

3

−CH

2

−O−CH

3

.

Answer 2

Answer:

W = F × s

Explanation:

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9782356180