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Explain the following: NO2 dimerises to ...

Explain the following: `NO_2` dimerises to `N_2O_4`.

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Explain the following : The bond angles (O -N-O) are not of the same value in NO_2^- and NO_2^+ .

The initial concentration of N_2O_5 in the following first order reaction N_2O_5(g) rarr 2 NO_2(g) + 1/2O_2 (g) was 1.24 x 10^(-2) mol L^(-1) Calculated the rate constant of the reaction at 318 K.

Thermal decomposition of dinitrogen pentoxide takes place by the following mechanism : N_2O_5 overset("Slow")(rarr)NO_2 + NO_3 N_2O_5 = NO_3 overset("Fast")(rarr) 3NO_2 +O_2 Write the rate'expression and order of the reaction.

Explain the following : Complete the following reaction: C_6H_5N_2Cl + H_3PO_2 + H_2O rarr

Explain the following reaction : n-BuBr + KCN overset (EtOH-H_2O) rarr n-BuCN

Reaction between NO_2 and CO to give CO_2 takes place by the following mechanism : NO_2 +NO overset("Slow")(rarr) NO + NO_3 NO_3 + CO overset("Fast")(rarr)NO_2 + CO_2 Write the rate expression and order of the reaction.

MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Name any five oxoacids of phosphorus and write their formulas .

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  2. Why does PCl3 fume in moisture ?

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  3. Explain the following: NO2 dimerises to N2O4.

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  4. Give two methods of preparation of NH3 and three important uses of NH3...

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  5. Draw the structures of XeO4

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  6. Fluorine exhibits only - 1 oxidation state whereas other halogens exhi...

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  7. What is the oxidation number of central atom K2[Zn (OH)4 ]

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  8. Noble gases have low boiling points. Explain.

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  9. What are interhalogen compounds ? Give example.

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  10. What are the interhalogen compounds ? Why are these more reactive than...

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  11. Explain the manufacture of sulphuric acid by contact process.

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  12. Describe the commerical uses of sulphuric acid.

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  13. NH3 is a strong base but NF3 does not show any basic property. Why?

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  14. What is laughing gas ?

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  15. Draw the structure of XeF4 . What is the state of hybridisation of Xe ...

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  16. Why does bond angle decreases in the hydrides of nitrogen family while...

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  17. Why are halogens coloured ?

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  18. How will ozone oxidise the following : Lead sulphide to lead sulphate

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  19. How will ozone oxidise the following : Potassium nitrite to potassium ...

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  20. What is the oxidation number of central atom Mn3 (CO)12

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