Question

How to determine the order of a reaction from the variation of the rate over time?

Answer 1

In physical and analytical chemistry, colorimetry or colourimetry is a technique "used to determine the ... Only after the device has been calibrated can you use it to find the densities and/or concentrations ... A similar colorimetric assay, the Bicinchoninic acid assay, uses a chemical reaction to determine protein concentration.

Answer 2

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A zeroth-order reaction is one whose rate is independent of concentration; its differential rate law is rate = k. We refer to these reactions as zeroth order because we could also write their rate in a form such that the exponent of the reactant in the rate law is 0.

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