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Give the equations to illustrate the che...

Give the equations to illustrate the chemical behaviour of phosphine .

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(i) Thermal stability: Phosphine decomposes into its elements when heated in absence of air at 317 K or when electric current is passed through it.
`4PH_(3) overset(317K)rarr P_(4)+6H_(2)`.
(ii) Combustion : When phosphine is heated with air or oxygen it burns to give meta phosphoric acid.
`4PH_(3)+8O_(2) overset(Delta)rarr underset( "Phosphorous pentoxide ")(P_(4)O_(10) " "+" "6H_(2)O)`
`P_(4)O_(10)+6H_(2)O overset(Delta)rarr underset("Meta phosphoric acid ")(" "4HPO_(3)" "+" " 4H_(2)O)`
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(b) (i) Give two equations to illustrate the chemical behaviour of phosphine. (ii) Explain the reaction between PCl_(5) and water.

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SURA PUBLICATION-P-BLOCK ELEMENTS - II-EVALUATION (ANSWER THE FOLLOWING QUESTIONS )
  1. Give the uses of argon.

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  2. Write the valence shell electronic configuration of group-15 elements.

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  3. Give the equations to illustrate the chemical behaviour of phosphine .

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  4. Give a reaction between nitric acid and a basic oxide.

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  5. What happens when PCl(5) is heated ?

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  6. Why is boric acid considered as a weak acid ?

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  7. Deduce the oxidation number of oxygen in hypofluorous acid - HOF.

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  8. Hybridisation and shape of BrF(5) is :

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  9. Complete the following reactions . NaCl+MnO(2)+H(2)SO(4) rarr

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  10. Complete the following reactions . NaNO(2)+HCl rarr

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  11. Complete the following reactions . IO(3)^(-)+I^(-)+H^(+) rarr

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  12. Complete the following reactions . I(2)+S(2)O(3)^(2-)rarr

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  13. Complete the following reactions . P(4)+NaOH+H(2)O rarr

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  14. Complete the following reactions . AgNO(3)+PH(3) rarr

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  15. Complete the following reactions . Mg+HNO(3) rarr

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  16. Complete the following reactions . KClO(3)overset(Delta)rarr

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  17. Complete the following reactions . Cu+H(2)SO(4) overset("Hot conc") ...

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  18. Complete the following reactions . Sb+Cl(2) rarr

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  19. Complete the following reactions . HBr +H(2)SO(4) rarr

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  20. Complete the following reactions . XeF(6)+H(2)O rarr

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