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How is nitrogen prepared in the laborato...

How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

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In the laboratory, nitrogen is prepared by heating an equimolar aqueous solution of ammonium chloride and sodium nitrite. As a result of double decomposition, unstable ammonium nitrite formed, decomposes to form dinitrogen.
`NH_(4)Cl(aq)+NaNO_(2)(aq)toNH_(4)NO_(2)(aq)+NaCl(aq)`
`underset("Ammonium nitrite (unstable)")(NH_(4)NO_(2)(aq))overset(delta)tounderset("Dinitrogen")(N_(2)(g)2H_(2)O(l))`
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-NCERT EXERCISE QUESTIONS
  1. Discuss trends in chemical reactivity of Gr-15 elements.

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  2. Why does NH(3) form H-bond but PH(3) does not?

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  3. How is nitrogen prepared in the laboratory? Write the chemical equatio...

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  4. How is ammonia manufactured industrially?

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  5. Illustrate how copper metal can give different products on reaction wi...

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  6. Give the resonating structures of NO(2) and N(2)O(5)

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  7. The HNH angle value is higher than HPH, HAsH and HSbH angles. Why? [Hi...

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  8. Why does R(3)P =O exist but R(3)N =O does not (R = alkyl group)?

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  9. Explain: NH(3) is basic while BiH(3) is only feebly basic.

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  10. Nitrogen exists as diatomic molecule and phosphorus as P(4). Why?

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

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  12. Why does nitrogen show catenation properties less than phosphorus?

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  13. Give the disproportionation reaction of H(3)PO(3).

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  14. Can PCl(5) act as an oxidising as well as a reducing agent? Justify.

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  15. Justify the placement of O, S, Se, Te and Po in the same group of the ...

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  16. Why is dioxygen a gas but sulphur a solid?

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  17. Knowing the electron gain enthalpy values for O to O^(-) and OtoO^(2-)...

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  18. Which aerosols deplete ozone?

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  19. Describe manufacture of H(2)SO(4) by contact process.

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  20. How is SO(2) an air pollutant?

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