Question

In the reaction N₂ + 3H₂ → 2NH₃, ratio by volume of N₂, H₂ and NH₃ is 1:3:2. This illustrates law of 

(a) definite proportion

(b) multiple proportion

(c) reciprocal proportion

(d) gaseous volumes

Answer 1

Correct option is (d) gaseous volumes

In the reaction, N₂​ + 3H₂​ → 2NH₃​, the ratio by volume of N₂, H₂ and NH_3​ is 1:3:2. This illustrates the law of Gaseous volumes or Gay Lussac's law of combining volumes of gases.

According to this law, when gases react together to produce gaseous products, the volume of reactants and products bear a simple whole-number ratio with each other, provided volumes are measured at the same temperature and pressure.