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SO2 act as both oxidising and reducing a...

`SO_2` act as both oxidising and reducing agent but `H_2S` acts as only reducing agent. Why ?

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In `H_2 S` the O.S. of S in -2, i.e., the lowest O.S., therefore, it can only increase its O.S. by losing electrons. As such it acts only as a reducing agent.
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BETTER CHOICE PUBLICATION-THE P-BLOCK ELEMENTS-QUESTION BANK
  1. Explain that SO2 can act as an oxidising agent as well as a reducing a...

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  2. Explain that SO2 can act as an oxidising agent as well as a reducing a...

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  3. SO2 act as both oxidising and reducing agent but H2S acts as only redu...

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  4. Comment on nature of two S-O bond formed in SO2 molecule. Are the two ...

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  5. SO2 has acidic character. Explain.

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  6. Write the reaction of SO2 with Cl2

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  7. Write the reaction of SO2 with Cl2

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  8. Give the oxidation of Na2SO3 by acidified KMnO4.

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  9. Give the formula and structures of different oxo-acids of sulphur ?

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  10. Describe the manufacture of H2SO4 by contact process?

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  11. Explain the manufacture of sulphuric acid by contact process.

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  12. Write the conditions for maximum yield of H2SO4 by contact process.

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  13. Give an example of a reaction in which H2 SO4 behaves as a strong acid...

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  14. Give an example of a reaction in which H2 SO4 behaves as a dehydrating...

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  15. Give an example of a reaction in which H2 SO4 behaves as an oxidising ...

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  16. Describe the commerical uses of sulphuric acid.

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  17. Mention three areas in which H2SO4 plays an important role.

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  18. Why conc. H2 SO4 is viscous and has high boiling point ?

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  19. Why is K(a2) << k(a1) for H2SO4 in water?

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  20. Why conc. sulphuric acid is always diluted by adding sulphuric acid to...

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