The following data are for the reaction `A+B rarr` Products:
`{:(Conc. of A(M),,Conc. of B(M),,Initial rate),(,,,,(mol L^(-1) s^(-1))),(0.1,,0.1,,4.0xx10^(-4)),(0.2,,0.2,,1.6xx10^(-3)),(0.5,,0.1,,1.0xx10^(-2)),(0.5,,0.5,,1.0xx10^(-2)):}`
(a) What is the order with respect to `A` and `B` for the reaction?
(b) Calculate the rate constant
Determine the reaction rate when the concentrations of `A` and `B` are `0.2 M` and `0.35 M` respectvely.

Explanation

(i) rate `=[A][B],` (ii) `k=4xx10^(-2)M^(-1) s^(-1)`, (iii) rate `=2.8xx10^(-3) M s^(-1)`