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In the Kjeldahl's method for estimation ...

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia avolved from 0.75 g of sample neutralized 10 mL of 1 M `H_(2)SO_(4)`. The percentage of nitrogen in the soil is

A

37.33

B

45.33

C

35.33

D

43.33

Text Solution

Verified by Experts

The correct Answer is:
A
`%N = (1.4 xx "Volume" xx "Molarity" xx "Basicity of acid")/("Weight of the substance taken")`
`= (1.4 xx 10 xx 1 xx 2)/(0.75) = 37.33`
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During estimation of nitrogen present in an organic compound by Kjeldhal's method, the ammonia evolved from 0.5 g of the compound neutralized 10 mL of 1 M H_(2)SO_(4) . Find the percentage of nitrogen in the compound.

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Knowledge Check

  • In the Kjeldahl1s method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralised 10 mL of 1 M H_(2)SO_(4) . The percentage of nitrogen in the soil is

    A
    37.33
    B
    45.33
    C
    35.33
    D
    43.33

  • In Kjeldahl's method of estimation of nitrogen K_(2)SO_(4) acts as:

    A
    an oxidising agent
    B
    catalytic agent
    C
    hydrolysing agent
    D
    boiling point elevator

  • In Kjeldahl's method of estimation of nitrogen, K_(2)SO_(4) acts as:

    A
    an oxidising agent
    B
    catalytic agent
    C
    hydrolysing agent
    D
    boiling point elevator

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