Question

When 4 litres of nitrogen completely reacts with hydrogen, what would be the volume of ammonia gas formed?

Answer 1

4 liter cube ............

Answer 2

N2 + 3H2 ——- 2NH3
So the ratio is 1:3:2;

Therefore ratio of nitrogen to ammonia is 1:3
Hence
1vol of N2 produces 3 vol of NH3;
1 litre of N2 produces 3 litre of NH3;
4*1 litre of N2 produces 4* 3 litre of NH3;
12 litres of NH3 ;

Hence your answer is : 4litres of nitrogen produces 12 litres of ammonia..

Hope this helps..