Question

give a chemical test to distinguish between C2H5Br and C6H5Br.

Answer 1

On addition of AgNO3 in C2H5Br a yellow ppt is formed which is insoluble in NH4OH

C6H5Br will not form yellow ppt with AgNO3.

Answer 2

Answer: 1-bromoethane will form a yellow precipitate when reacted with $AgNO_3$ and bromobenzene will not produce yellow precipitate.

Explanation:

$C_2H_5Br$ is a haloalkane compound named as 1-bromoethane and $C_6H_5Br$ is a haloarene compound named as bromobenzene.

When $AgNO_3$ is put in both of these compounds, only of the compounds will react which is 1-bromoethane and produce a yellow precipitate of silver bromide.

Bromobenzene will not react with silver nitrate and hence, no precipiate will be formed.