Question

How is SO2 prepared??

Answer 1

Answer:

$\huge\pink{hey\:mate}$

Preparation of Sulphur Dioxide:

In the laboratory, sulphur dioxide is prepared by the reaction of metallic sulphite or a metallic bisulphite with a dilute acid. For example, a reaction between the dilute sulphuric acid and sodium sulphite will result in the formation of SO2.

Na2SO3 + H2SO4 → Na2SO4 + H2O + SO2

Commercially it is obtained as a by-product released from the roasting of sulphide ores. The gas obtained is dried, liquefied and then stored in steel cylinders.

4FeS2 (s) + 11 O2 (g) →2Fe2O3 (s) + 8SO2 (g)

Properties of Sulphur Dioxide:

It is a colourless gas with a rotten egg odour. It is highly soluble in water.

It liquefies easily.

Answer 2

Explanation:

In the laboratory, sulphur dioxide is prepared by the reaction of metallic sulphite or a metallic bisulphite with a dilute acid. For example, a reaction between the dilute sulphuric acid and sodium sulphite will result in the formation of SO2..