Rates Of Reaction Experiment #3
by Martyn F. Chillmaid/science Photo Library
Title
Rates Of Reaction Experiment #3
Artist
Martyn F. Chillmaid/science Photo Library
Medium
Photograph - Photograph
Description
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) to form an opaque solution (right). 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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May 9th, 2022
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