How many moles of NH₃ can be produced from 2.13 moles of nitrogen in the following reaction: N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)

Answer 1

N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)

In this reaction 1 mole of nitrogen gas produce 2 moles of ammonia. So, 2.13 moles of nitrogen will produce 2*2.13 moles of ammonia i.e. 4.26 moles of ammonia.

Answer 2

As N₂ represents 1 mole of Nitrogen in the reaction and NH₃ represents 1 mole of ammonia, we can see that 1 mole of nitrogen will produce 2 moles of ammonia. If we take 2.13 moles of nitrogen it will produce 2.13*2 = 4 moles of ammonia.

Now you will question about remaining amount of nitrogen, it will remain in the system as to produce another mole of ammonia we will need complete one mole of nitrogen.

This is govern by the rule of chemical equivalence. It is not same as the mass equivalence.