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On being slowly passed through water, PH...

On being slowly passed through water, `PH_(3)` forms bubbles but `NH_(3)` dissolves. Why is it so ?

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N-H bond is more polar than P-H bond. Hence, `NH_(3)` forms hydrogen bonds with `H_(2)O` molecules and hence dissolves in it whereas `PH_(3)` does not dissolve and hence forms bubbles.
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  6. How will you obtain phosphine from phosphorus ?

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

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  11. Why does PCl(5) fume in moisture ?

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  14. What is the oxidation number of phosphorus in H(3)PO(2) molecule ?

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  15. H(3)PO(2)andH(3)PO(3) act as good reducing agents but H(3)PO(4) does n...

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  16. Why does H(3)PO(3) act as a reducing agent but H(3)PO(4) does not ?

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  17. Why does orthophosphoric acid exist as a syrupy liquid ?

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  18. How is pyrophosphoric acid related to orthophosphoric acid ?

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  19. What kind of molecules show disproportionation reactions ? Give one e...

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  20. CN^(-) ion is known but CP^(-) ion is not known.

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