Question

A.Draw the structure of sulphuric acid.
B. A sparkles current is passed through oxygen to prepare ozone. Why?
C. Bleaching action of sulphur is a temporary action. Comment

Answer 1

• Figure shows structure of Sulphuric acid.
• A slow current of pure and dry oxygen is passed through the annular space. On subjecting oxygen to silent electrical discharge, ozonized oxygen containing 10-15% ozone is formed. By taking the following precautions, the yield of ozone can be increased in the ozonized oxygen: Only pure and dry oxygen should be used.
  
• Sulphour dioxide removes oxygen from the coloured substance and makes it colourless. But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.