How will you prepare chlorobenzene from Benzene.
Benzene react with chloride in the presence of ferric chloride to form chlorobenzene.
How will you prepare butane from the ethyl iodide?
When ethyl iodide react with sodium in dry ether, it gives butane. This reaction is known as Wurtz reaction.
How is pure chloroform prepared? How is it oxidised in air or sunlight?
In industry, chloroform is produced by heating a mixture of chlorine or methane. At 400–500 °C, a free radical halogenation occurs, converting these precursors to progressively more chlorinated compounds:
CH4 + Cl2 → CH3Cl + HCl
CH3Cl + Cl2 → CH2Cl2 + HCl
CH2Cl2 + Cl2 → CHCl3 + HCl
Chloroform is slowly oxidised by air in the presence of light to an extremely poisonous gas, carbonyl chloride known as phosgene.