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1.4 g of an organic compound was digeste...

1.4 g of an organic compound was digested according to Kjeldahl's method and the ammonia evolved was absorbed in 60 mL of M/10 `H_(2)SO_(4)` solution. The excess sulphuric acid required 20 mL of M/10 NaOH solution for neutralization. The percentage of nitrogen in the compound is

A

3

B

5

C

10

D

24

Text Solution

Verified by Experts

The correct Answer is:
C
%of Nitrogen `=(1.4 xx "m. eq. of " H_2SO_4 "used to neutralize" NH_3)/("mass of the compound")`
`= (1.4xx(60xx1/10xx2 - 20xx1/10))/(1.4) = (1.4 (12-2))/(1.4) =10%`
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