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H(3)PO(2) " and " H(3)PO(3) act as good ...

`H_(3)PO_(2) " and " H_(3)PO_(3)` act as good reducing agents while `H_(3)PO_(4)` does not. Discuss.

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P can extend in its oxidation state both in `H_(3)PO_(2)`(+1) and `H_(3)PO_(3)(+3)` but not in `H_(3)PO_(4)(+5)`.
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Assignment
  1. Why is NH(3) a stronger base than PH(3) ?

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  2. In the structure of HNO(3), why is N-O bond (121 pm) shorter than N-OH...

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  3. H(3)PO(2) " and " H(3)PO(3) act as good reducing agents while H(3)PO(4...

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  4. Why is bond angle in PH(4)^(+) ion higher than in PH(3) ?

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  5. Why phosphorus is more reactive than nitrogen?

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  6. H(3)PO(3) is diprotic (or dibasic). Why ?

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  7. Which is a stronger reducing agent, SbH(3) " or " BiH(3) and why ?

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  8. Why is nitrogen (N(2)) much less reactive than phosphorus (P(4))

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  9. What happens when the following are heated ? (i) PCl(5) (ii) H(3)PO(...

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  10. Why does PH(3) have lower boiling point than NH(3) ?

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  11. Write main differences between the properties of white phospghorus and...

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  12. Why is PCl(5) molecule more covalent than PCl(3) molecule ?

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  13. The basicity of phosphorus acid (H(3)PO(3)) is ............ .

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  14. Why is H(3)PO(2) a stronger reducing agent than H(3PO(3) ?

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  15. The formation of ammonia by Haber's process is favoured by ………. pressu...

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  16. How does nitric acid react with (i) Copper (ii) Iron ? Give chemical e...

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  17. Describe the manufacture of sulphuric acid by contact process on the b...

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  18. What happens when barium azide is heated ?

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  19. Why is NH(3) a good complexing agent ?

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  20. Copper turnings upon heating with conc. HNO(3) evolve a brown gas whic...

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