1.

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

Answer»

`6%`
`10%`
`3%`
`5%`

Solution :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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