Estimating the Concentration of Domestic Bleach

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In this classic demonstration, from the Royal Society of Chemistry, an excess of hydrogen peroxide is added to household bleach and the volume of oxygen evolved is measured. Using the ideal gas equation the concentration of sodium chlorate in the bleach can be determined.

The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching tips.

Curriculum links include: redox reactions, ideal gas, reactions of chlorine

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