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In Kjeldahl's method, nitrogen present i...

In Kjeldahl's method, nitrogen present is estimated as

A

`N_(2)`

B

`NH_(3)`

C

`NO_(2)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
In this method the nitrogen present is qunatitively converted into `(NH_(4))_(2)SO_(4)` on heating with conc. `H_(2)SO_(4)`. The `(NH_(4))_(2)SO_(4)` is then treated with standard solution to liberate `NH_(3)` , which is absorbed in `H_(2)SO_(4)` to obtain precentage of nitrogen
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Knowledge Check

  • In Kjeldahl's method, nitrogen presen is estimated as:

    A
    `N_(2)`
    B
    `NH_(3)`
    C
    `NO_(2)`
    D
    None of these

  • In Kjeldahl's method of estimation of nitrogen, nitrogen is quantitatively converted to ammonium sulphate. It is then treated with standard solution of alkli. The nitrogen which is present is estimated as

    A
    `N_(2)` gas
    B
    `NO_(2)` gas
    C
    `NH_(3)` gas
    D
    `(NH_(4))_(2)SO_(4)` ppt

  • Which of the following compounds will be suitable for Kjeldahl's method for nitrogen estimation? (a) (b) (c) (d)

    A
    B
    C
    D
    • RESONANCE ENGLISH-STRUCTURAL IDENTIFICATION & PRACTICAL ORGANIC CHEMISTRY-Section -B
    1. In Kjeldahl's method, nitrogen present is estimated as

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    2. Molecular mass of a volatile substance is determined by :

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    3. The catalyst used in Kjeldahl's method for the estimation of nitrogen ...

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    4. 6 g of the organic compound on heating with NaOH gave NH(3) which is n...

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    5. The desiccants used for absorbing water during Liebig's method for est...

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    6. 0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for ...

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    7. 0.28 g of nitrogenous compound was subjected to Kjeldahl's process to ...

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    8. The equivalent wieght of an acid is equal to

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    9. 0.30 gm of an organic compound gave 50 ml of nitrogen collected at 300...

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    10. Liebig test is used ot estimate

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    11. Copper wire test is called

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    12. During estimation of nitrogen present in an organic compound by Kjelda...

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    13. In Carius method of estimation of halogen, 0.15 g of an organic compou...

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    14. In sulphur estimation, 0.157 g of an organic compound gave 0.4813 g of...

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    15. An organic compound having molecular mass 60 is found to contain C = 2...

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    16. A gaseous hydrocarbon has 85% carbon and vapour density of 28. The pos...

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    17. Two element X ( at . Mass = 75) and Y(at .mass =16) combine to given ...

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    18. Quantitive measurements of nitrogen in an organic compounds is done by...

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