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For the estimation of nitrogen 1.4 g of ...

For the estimation of nitrogen `1.4 g` of organic compound was diagest by Kjedahl method an the evolved ammonia was absorbed in `60 mL` of `M/10` sulphuric acid. The unreacted acid required 20 ml of `M/10` sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is :

A

3

B

5

C

24

D

10

Text Solution

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The correct Answer is:
D
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For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl's method and the evolved ammonia was absorbed in 60 mL of M//10 sulphuric acid. The unreacted acid required 20 mL of M//10 sodium hydroxide for complete neutralisation. The percentage of nitrogen in the compound is

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0.126 g of acid required 20 mL of 0.1 N NaOH for complete neutralisation. The equivalent mass of an acid is

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A sample of 0.50 g of an organic compound was treated according to Kjeldahl's method. The ammonia evolved was absorbed in 50 mL of 0.5 M H_(2)SO_(4) . The residual acid required 60 mL of 0.5 M solution of NaOH for neutralisation. What would be the percentage composition of nitrogen in the compound?

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