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This experiment will involve the determination of a rate equation; derived from experimental data.
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The Determination of a Rate Equation This experiment will involve the determination of a rate equation; derived from experimental data. For a generalised reaction: 1A + B ==> AB, a rate equation can be set up. Rate = k[A]x[B]y The rate equation can tell us the overall rate of the reaction, when concentrations of reactants are specified. However, to calculate values for k, x and y, the experiment needs to be carried out and analysis of results done so that numerical values can be calculated. This experiment will involved the reaction between sodium thiosulphate and hydrochloric acid. The reaction: Na2S2O3(aq) + HCl(aq) ==> S(s) + SO2(g) + NaCl(aq) + H2O(l) The generalised rate equation for this reaction is thus: Rate = k[Na2S2O3]x[HCl]y In order to determine both x and y, the method of the experiment will have to include changing the concentration of one reactant to calculate its own rate of reaction while keeping the concentration of the other constant....
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