The rate law for the reaction in Exercise 20A.2(a) was found to be v=k_r[A][B]. What are the units of k_r when the concentrations are in moles per cubic decimetre? Express the rate law in terms of the rates of formation and consumption of (i) A, (ii) C. 

Data in Exercise 20A.2(a)

The rate of the reaction A+2 B→3 C+D was reported as 2.7mol dm⁻³ s⁻¹. State the rates of formation and consumption of the participants.