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Why does sulphur dioxide exhibit bleachi...

Why does sulphur dioxide exhibit bleaching action only in presence of water?

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Sulphur dioxide, forms nascent hydrogen when reacts with water. This nascent hydrogen has bleaching property.
`SO_2 + 2H_2O rarr H_2SO_4 + 2[H]`
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ARIHANT PUBLICATION-GROUP 16 ELEMENTS: OXYGEN FAMILY-ODISHA BUREAU.S TEXTBOOK SOLUTIONS (C SHORT ANSWER TYPE I QUESTIONS)
  1. Write with equation what happens when dilute sulphuric acid is added t...

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  2. Why hydrogen sulphide cannot be dried by conc. H2SO4?

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  3. Why does sulphur dioxide exhibit bleaching action only in presence of ...

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  4. What is the action of ozone on acidified ferrous sulphate? Give equati...

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  5. What gas is produced when conc. H2SO4 reacts with common salt at room ...

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  6. Write the equation for the reaction that takes place in stages when so...

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  7. Give one reaction in which SO2 behaves as a reducing agent. Give equat...

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  8. Why is ozone not collected over mercury?

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  9. What happens when conc. H2SO4 is added to formic acid? Give equation.

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  10. What happens when sulphuretted hydrogen is passed through chlorine wat...

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  11. What is the action of conc. H2SO4 on potassium bromide? Give equation.

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  12. Complete the equation given below and make it a balanced equation Sn...

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  13. What happens when SO2 is passed through sulphuretted-hydrogen dissolve...

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  14. Explain bleaching action of sulphur dioxide.

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  15. Why does ozone act as a powerful oxidising agent?

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  16. How is the presence of SO2 detected?

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  17. List the important sources of sulphur.

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  18. H2S is less acidic than H2Te Why?

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  19. How is SO2 an air pollutant?

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  20. What happens when SO2 is passed through sulphuretted hydrogen dissolve...

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