Assignment (Class 12) - Rate of Reaction - Chemical Kinetics

• Define the rate of a reaction. What are its units?

• Why does the rate of a reaction not remain constant throughout?

• What is meant by reaction rate? Give its symbolic expression and units for the reaction

            $\ce{CO (g) + NO (g) -> CO2 (g) + NO (g) }$

• Explain the rate of reaction:

            $\ce{2N2O5 -> 4NO2 + O2 ->}$ using 

            (a) concentration change of $\ce{N2O5}$    

            (b) concentration change of  $\ce{O2}$

• Sketch a labeled potential energy diagram for an endothermic reaction in the presence and in the absence of a catalyst.