Consider the following chemical reaction and the corresponding kinetic data showing the initial reaction rate as a function of the initial concentrations of the reactions :
`H_3AsO_4 (aq)+2H_3O^(+)(aq)+3l^(-)(aq)toHAsO_2(aq)+l_3^(-)(aq)+4H_2O(liq)`
`{:("Initial Rate"xx10^(-5)(M//sec),[H_3AsO_4],[H_3O^(+)],[I]),(3.7,0.001,0.01,0.10),(7.4,0.001,0.01,0.20),(7.4,0.002,0.01,0.10),(3.7,0.002,0.005,0.20):}`
Using the data, establish the correct reaction composite order.

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1 Answers

Correct Answer - 4
Assume rate law
`r=K[H_3AsO_4]^(x)[H_3O^(+)]^(y)[I^(-)]^z`
Solving by the help of various experiments
x=1 y=2 z=1
total order =4

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