For the reaction `2A+BrarrC`, the values of initial rate at different reactant concentrations are given in the table below. The rate law for the reaction is : `{:([A]("mol"L^(-1)),[B]("mol"L^(-1)),{:("Initial Rate"),("mol"^(-1)s^(-1)):}),(0.05,0.05,0.045),(0.10,0.05,0.090),(0.20,0.10,0.72):}`
`{:([A]("mol"L^(-1)),[B]("mol"L^(-1)),{:("Initial Rate"),("mol"^(-1)s^(-1)):}),(0.05,0.05,0.045),(0.10,0.05,0.090),(0.20,0.10,0.72):}`
