Q17 of 55 Page 1

Write the mechanism of the following reaction:

The reaction is a nucleophilic substitution reaction which involves mechanism. The mechanism is as follows:

i) A leaving group is created by the act of protonation of hydroxyl group.

ii) Water molecule is replaced by the bromide ion to form the alkyl bromide by the displacement reaction.

Write chemical equations when

a) Ethyl chloride is treated with aqueous KOH

b) Chlorobenzene is treated with CH₃COOH in presence of anhydrous

i) Which alkyl halide from the following pairs would you expect to react rapidly by an mechanism and why?

ii) Racemisation occurs in reactions. Why?

Name the reagents used in the following reactions:

1) Bromination of Phenol to 2,4,6-tribromophenol

2) Butan-2-one to Butan-2-ol

3) Friedel-Crafts alkylation of anisole

4) Oxidation of primary alcohol to carboxylic acid

1) what type of stoichiometric defect is shown by KCl and why?

2) What type of semiconductor is formed when silicon is doped with As?

3) Which one of the following is an example of molecular solid:

4) What types of substances would make better magnets, ferromagnetic and ferrimagnetic?