Exercise 4 | Chemical Kinetics: Rate Laws

Here is a reaction: N2(g) + 3 H2(g) → 2 NH3(g).

If the rate of formation of ammonia is 0.272 M.s-1, what is the rate of disappearance of H2?

rate of the reaction = - 13 [H2]t  = 12 [NH3]t 

rate of formation of NH3 =  [NH3]t

rate of disappearance of H2 = - [H2]t

 

⇒ rate of disappearance of H232 x rate of formation of NH3

⇒ rate of disappearance of H2 =  x 0.272 = 0.408 M.s-1