Mo VI catalytic response

The oxidation of the iodide ion by hydrogen peroxide in an acidic medium, 

The linear and quadratic models fitted to the data in the table are the following  

The second lack of fit ratio is still larger than 3,4 at the 95% confidence level (which is 6.59), but it is clear that the quadratic model provides a much better fit than the linear one, as we can see by inspecting the graphs 

Central composite design for the optimization study of the Mo(VI) catalytic response 

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ANDRADE, J. C. EIRAS, S. P. and BRUNS, R. E. Study of the Mo(VI) catalytic response in the oxidation of iodide by hydrogen peroxide using a monosegmented continuous flow system. Anal. Chim. Acta 255, 1991, pp. 149-155. 

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