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Which oxide of sulphur can act as both ...

Which oxide of sulphur can act as both oxidizing and reducing agent ? Give one example each.

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Sulphur dioxide `(SO_(2))` acts as both oxidising as well as reducing agent.
`SO_(2)` as Oxidising agent :
Sodium sulphide oxidises to hypo with `SO_(2)`.
`2Na_(2)S+3SO_(2)to2Na_(2)S_(2)O_(3)+S`
`SO_(2)` as Reducing agent :
`SO_(2)` reduces `Fe^(+3)` ions to `Fe^(+2)` ions.
`2Fe^(+3)+SO_(2)+2H_(2)O to2Fe^(+2)+SO_(4)^(-2)+4H^(+)`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-P-BLOCK ELEMENTS -GROUP 16 ELEMENTS (SHORT ANSWER QUESTIONS)
  1. Describe the manufacture of H(2)SO(4) by contact process.

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  2. How is ozone prepared ? How does it react with the following ? PbS

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  3. How is ozone prepared ? How does it react with the following ? KI

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  4. How is ozone prepared ? How does it react with the following ? Hg

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  5. How is ozone prepared ? How does it react with the following ? Ag

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  6. Write a short note on the allotropy of sulphur.

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  7. How does SO(2) react with the following ? Na(2)SO(3)("aq")

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  8. How does SO(2) react with the following ? Cl(2)

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  9. How does SO(2) react with the following ? "Fe"^(+3)"ions"

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  10. How does SO(2) react with the following ? "KMnO"(4)

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  11. Starting from elemental sulphur, how is H(2)SO(4) prepared ?

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  12. Describe the structures (shapes) of SO(4)^(-2) and SO(3).

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  13. Which oxide of sulphur can act as both oxidizing and reducing agent ?...

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  14. Explain the conditions favourable for the formation of SO(3) from SO(2...

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  15. Complete the following KCl+H(2)SO(4)to

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  16. Complete the following "Sucrose"overset("Conc.H"(2)SO(4))to

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  17. Complete the following Cu+H(2)SO(4)("Conc")to

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  18. Complete the following C+H(2)SO(4)("Conc")to

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  19. Which is used for drying ammonia ?

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  20. Why conc "H"(2)"SO"(4),"P"(4)"O"(10) and anhydrous CaCl(2) cannot be u...

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