Question

How sulphur dioxide is prepared in laboratory? Explain the bleaching
property of sulphur dioxide,​

Answer 1

Preparation of sulphur dioxide

Explanation:

• Sulphur dioxide could be a common gas that incorporates a pungent smell. we are going to study the importance and methods of preparation of this gas.
• We can create sulfur dioxide within the laboratory by the action of dilute sulfuric acid on sulphites.
• Commercially, chemists produce vast volumes of pollutant by heating sulphide ore, as an example, let’s say iron sulphide. They, then, liquefy this gas beyond drying under 25 atm pressure.
• It's usually stored in steel barrels. as an example, a reaction between the dilute vitriol and sodium sulphite will end in the formation of dioxide.
• Some copper turnings are kept within the round bottom ask which is fitted with a thistle funnel and delivery tube. the opposite end of the delivery tube is kept in an absorption bottle containing conc oil of vitriol.
• Conc vitriol is poured into the thistle funnel which reaches the round bottom asks to begin the reaction.
• Again, one end of the delivery tube is kept in an absorption bottle and also the other end is introduced to an erect gas jar for the gathering of pollutant gas by upward displacement of air.
• The copper or flask is heated. In doing therefore the reaction between acid and copper takes place and dioxide gas is produced within the flask.