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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

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The correct Answer is:
B
In this method the nitrogen present is quantitatively 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 alkali solution to liberate `NH_(3)`, which is absorbed in `H_(2)SO_(4)` to obtain percentage of nitrogen.
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