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Phosphorus forms a number of oxoacids. O...

Phosphorus forms a number of oxoacids. Out of these oxoacids, phosphinic acid has strong reducing property. Write its structure and also write a reaction its reducing behaviour.

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The structure of phosphinic acid (hypophosphorus acid) is given on the R.H.S. Since it contains two P-H bonds, it acts as a strong reducing agent. For example, it reduces `AgNO_(3)` to metallic silver.
`4 AgNO_(3) + H_(3)PO_(2) + 2H_(2)O rarr 4Ag darr H_(3)PO_(4) + 4 HNO_(3)`
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PRADEEP-P-BLOCK ELEMENTS (NITROGEN FAMILY)-NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS-I)
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  2. Elements of group 15 form compounds in +5 oxidatin state. However, bis...

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  3. On heating ammonium dichromate and barium azide separately we get

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  4. In the preparation of HNO(3), we get NO gas by catalytic oxidation of ...

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  5. The oxidation state of central atom in the aniom of compound NaH(2)PO(...

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  6. Write a balanced chemical equation for the reaction showing catalytic ...

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  7. Write the structure of pyrophosphoric acid.

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  8. PH(3) forms bubbles when passed slowly in water but NH(3) dissolves. E...

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  9. In PCl(5) phosphorus is in sp^(3) d hybridised state but all its five ...

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  10. Why is nitric oxide paramagnetic in gaseous state but the solid obtain...

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  11. On reaction with Cl(2) phosphorus forms two types of halides 'A' and '...

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  12. In the ring test of NO(3)^(-) ion, Fe^(2+) ion reduces nitrate ion to ...

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  13. P(4)O(6) reacts with water according to equation P(4)O(6)to4H(3)PO(3)....

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  14. White phosphorus reacts with chlorine and the product hydrolyses in th...

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  15. Name three oxoacids of nitrogen . Write the disproportionation reactio...

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  16. Nitric acid forms an oxide of nitrogen on reaction with P(4)O(10). Wri...

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  17. (i) white phosphorus (ii) red phosporus and (iii) balck phosphorus. Wr...

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  18. Given an example to show the effect of concentration of nitric acid on...

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  19. PCl(5) reacts with finely divided silver on heating and a white silver...

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  20. Phosphorus forms a number of oxoacids. Out of these oxoacids, phosphin...

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