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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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Model Discrimination

One can also determine which model or equation best fits the experimental data by comparing the sums of the squares for each model and then choosing the equation with a smaller sum of squares and/or carrying out an F-test. Alternatively, we can compare the residual plots for each model. These plots show the error associated with each data point, and one looks to see if the error is randomly distributed or if there is a trend in the error. When the error is randomly distributed, this is an additional indication that the correct rate law has been chosen. An example of model discrimination using nonlinear regression is given on the DVD-ROM in Chapter 10 of the Summary Notes.

7.6 Reaction Rate Data from Differential Reactors ...

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