orderseek - Finds chemical reaction order

Returns the reaction order, r-squared value, rate constant, and half life.
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Updated 10 Feb 2010

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From undergraduate chemistry, we know how to test whether a reaction is 0th, 1st, or 2nd order by plotting different transformations of the data, and inspecting which plot fits the best.

This program does the same thing. It transforms the data using different values of the order, attempting to maximize the Pearson r-squared value. Its much faster than making and inspecting a multitude of different plots.

The picture above is essentially an example.

I used the Wikipedia article for the n-th order transformation equation. (http://en.wikipedia.org/wiki/Rate_equation#Summary_for_reaction_orders_0.2C_1.2C_2_and_n)

Cite As

Brad Ridder (2024). orderseek - Finds chemical reaction order (https://www.mathworks.com/matlabcentral/fileexchange/26621-orderseek-finds-chemical-reaction-order), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2008b
Compatible with any release
Platform Compatibility
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Version Published Release Notes
1.1.0.0

fixed a tiny little error in the correlation coefficient's calculation. all better now :)

1.0.0.0