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For the estimation of nitrogen 1.4g of a...

For the estimation of nitrogen `1.4g` of an organic compound was digested by Kjeldahl method and the evaloed ammonia was absorbed in `60mL` of `(M)/(10)` sulphuric acid. The unreacted acid required `20mL` of `(M)/(10)` sodium hydroxide for complete neutralisation . The percentage of nitrogen in the compound is

A

`6%`

B

`10%`

C

`3%`

D

`5%`

Text Solution

Verified by Experts

The correct Answer is:
B
Volume of `M//10H_(2)SO_(4)` taken `=60mL`
`20mL` of `(M)/(10)NaOH=(20)/(2)mL` of `(M)/(10)`
`H_(2)SO_(4)`
`:.` Volume of `(M)/(10)H_(2)SO_(4)` used for neutralisation of `NH_(3)=60-10=50mL`
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