In a particular reaction, BrO3- + 5 Br- + H3O+ → 3 Br2 + 9 H2O , the following table below is completed with the initial concentrations of each reactant and the initial rate for each trial. 1.) Write the rate expression for this reaction. (HINT: rate = -Δ[rcts]/Δt = +Δ[pdcts]/Δt ... )  2.) Write the rate law for this reaction. (HINT: rate = k [rcts]x ... ) 3.) What is the overall order for this reaction? 4.) What is the rate constant (k) for this reaction? Extra Credit: Calculate the rate of this reaction when [BrO3-] = 0.50 M, [Br-] = 0.25 M, and [H3O+] = 0.35 M.

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