8.A reaction involves two reactants,A and B.The initial reaction rate wasmeasured with different starting concentrations of A and B and the followingresultswere obtained at 25 C:IMPORTANT:the exxponents are 10,and 103【A][B]Initial ratemol dmmol dmmol dm’s’0.20.23.2×100.40.41.3×1030.40.81.3×103a)Deduce the order of the reaction in A,in B and the overall order.Hencewrite a rate expression for the reaction.[3]order AorderB:overal oder:.atu=kLA]CB]b)Calculate a value for the rate constant,giving suitable units.[2]c)What initial rate would you expect if the initial concentrations of bothreactants were 0.1 mol dm-3?[2]d)If the overall equation for the reaction isA+BC+D,write a mechanism,indicating which step is the rate determining step,that is:i consistent with the rate expression found.ii inconsistent with the rate expression found.[2]
