Substantiate the following. a. The use of freon as refrigerant is banned in several countries.

Explanation

a. In chloroform C-Cl bond is a strong covalent bond and it will .not break easily to-form a precipitate with . AgNO_3.. In iodoform C-I bond is weak and hence it breaks easily to form a precipitate. with . AgNO_x.
b. Chloroform undergoes oxidation in presence of light to produce phosgene.
.2 CHCl_3+ O_2. ilight .rarr .2 COCl_2+2 HCl.
To prevent the cohtact of chloroform with air and sunlight. if is taken in brown bottle and filled upto the neck.
c. Freon affects the ozone layer. So its use is banned.
d. In benzyl chloride, chlorine is attached to a side chain and the . C- Cl. bond can be broken. easily. On the other hand, in chlorobenzene chlorine is directly attached to an aromatic ring. The .C=C. bond in chlorobenzene is stronger and hence is not broken easily.