Answer :

Given that, total mass of organic compound=0.50g

60ml of 0.5M solution of NaOH was required by residual acid for neutralisation.

60ml of 0.5M NaOH solution =ml of 0.5M H2SO4

=30ml of 0.5M H2SO4

Therefore, acid consumed in absorption of evolved ammonia is (50-30)ml=20ml

Again,20ml of 0.5M H2SO4=40ml of 0.5M NH3

Therefore, 40ml of 0.5M NH3 will contain=

=0.28g of N

Therefore, the % of nitrogen in 0.50g of organic compound==56%.

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