Question

For the reaction Cl 2 ( g ) + 4H 2 O( g )  2ClO 2 ( g ) + 4 H 2 ( g ), at a particular instant in time, the rate of change of H 2 ( g ) is +0.040 M/s. At this same moment, what is the rate of change of Cl 2 ( g ), what is the rate of change of H 2 O( g ), what is the rate of change of ClO 2 ( g ), and what is the rate of the reaction?

Answer 1

The reaction under consideration is

      Cl₂ (g) + 4 H₂O (g) = 2 ClO₂ (g) + 4 H₂ (g)

So, for 4 molecules of H₂ generation 1 molecule of Cl₂ and 4 molecules of Cl₂ have to be consumed and 2 molecules of ClO₂ would be generated along with.

Now we have Rate of change of [H₂] is +0.040 M/s.

Hence,

         Rate of change of [ClO₂] is +0.020 M/s.

         Rate of change of [Cl₂] is -0.010 M/s.

         Rate of change of [H₂O] is -0.040 M/s.