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How will you obtain phosphine from phosp...

How will you obtain phosphine from phosphorus ?

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Phosphine is produced when white phosphorus in heated with a concentrated solution of NaOH in an inert atmosphere of `CO_(2)` or oil gas.
`P_(4)(s)3NaOH(aq)+3H_(3)O(l)underset(Delta)overset(CO_(2)atm.)tounderset("Phosphine")(PH_(3)(g))+underset("Sod. hypophosphite")(3NaH_(2)PO_(2))(aq)`
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PRADEEP-P-BLOCK ELEMENTS (NITROGEN FAMILY)-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. Complete the equation : [Fe(H(2)O)(6)]^(2+) + NO rarr

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  2. In the ring test for identification of nitrate ion, what is the formul...

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  3. Important allotropic forms of phosphorus are white phosphorus, red pho...

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  4. Write the chemical equation for the following : Ca(3)(PO(4))(2) + Si...

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  5. Why is white phosphorus kept under water ?

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  6. How will you obtain phosphine from phosphorus ?

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  7. On being slowly passed through water, PH(3) forms bubbles but NH(3) di...

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  8. Give the chemical equation for the reaction the occurs between iron an...

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  9. Which is more stable PCl(5)orPCl(3) ? Or What happens when PCl(5) is...

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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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  12. Complete the following reactions : (i) P(4) + SOCl(2) rarr (ii) CH...

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  13. Suggest a method for the laboratory preparation of DCl. Write a balan...

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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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