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Determining the Percent Peroxide in a Commercial Product

Experiment #8 from Vernier Chemistry Investigations for Use with AP* Chemistry

Education Level
High School


Hydrogen peroxide, H2O2, is notoriously unstable and light sensitive, and therefore it is difficult to maintain a solution of H2O2 at a specified concentration. Commercial hydrogen peroxide is packaged in an opaque bottle, usually a brown color, to shield the H2O2 molecules from light. The concentration of commercial hydrogen peroxide is usually 3% (w/v).


The objective of this investigation is to test a bottle of commercial hydrogen peroxide and compare your results to the advertised concentration of 3% H2O2.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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This experiment is #8 of Vernier Chemistry Investigations for Use with AP* Chemistry. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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