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S2O8^-2(aq)+3I^-(aq)--2SO4^-2(aq)+I3^-(aq) S2O8^-2.        I^-                       rate 0.018M.  &

S2O8^-2(aq)+3I^-(aq)--2SO4^-2(aq)+I3^-(aq)
S2O8^-2.        I^-                       rate
0.018M.         0.018M.             2.6*10^-6
0.018M.         0.036M.             5.3*10^-6
0.072M.         0.036M.             2.12*10^-5

a. write the rate law for this reaction including the reaction order for each reactant
b. calculate the value of k
c. calculate the Rate of the concentration when [S2O8^-2]= 0.2500M and [I]= 0.120M

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