Rates of reaction experiment

Rates of reaction experiment

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This image is part of the sequence Science and technology: Rates of reaction experiement

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Rates of reaction experiment. This experiment allows variables such as the concentration of a reactant to be investigated. Sodium thiosulphate (Na2S2O3) is a clear liquid, which reacts with hydrochloric acid (HCl). A cross drawn onto paper is placed under the reaction to allow the end point to be confirmed. The experiment is timed from when the reactants are mixed until a precipitate of sulphur is formed which obscures the cross.

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Keywords: beaker, chemical, chemicals, chemistry, compound, compounds, education, experiment, glassware, hydrochloric acid, inorganic, liquid, liquids, no-one, nobody, positive, rate, rates of reaction, reagent bottle, school, school science, science education, sodium thiosulphate, solution, solutions

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