Chemistry - Chemical Kinetics Question with Solution | TestHub

The average rate of reaction is given by the ratio of the change in concentration of the product to the time interval.

Average rate $=\frac{\Delta [P]}{\Delta t}$

Substituting the given values:

$\Delta [P]=0.05$ M

$\Delta t=20$ s

Average rate $=\frac{0.05}{20}=0.0025$ M s${}^{-1}$

Answer: $0.0025\mathrm{M}{\mathrm{s}}^{-1}$