Question

0.788gof an organic compound was analysed by Kjeldahl's method. Ammonia evolved was absorbed in 60 ml N sulphuric acid. Excess of sulphuric acid is neutralised by 73.7ml of N sodium hydroxide. Calculate % of Nitrogen in the compound. ​

Answer 1

Answer:

• The remaining acid solution was made up to 500 ml by the addition of water.
• Twenty millilitres of the dilute solution required 32 ml (N),(10) caustic soda solution for complete neutralisation.
• Calculate the percentage of nitrogen in the compound method and the ammonia evolved was absorbed in 100 ml NH2SO4.