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The determination of the rate equation between
Member rating: No Rating | Words: 3253 | Submitted: Thu Oct 11 2007
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The determination of the rate equation between the reaction of HCl and Na2S2O3 Aim To determine the rate equation between the reaction of known concentrations of HCl and Na2S2O3. Scientific Background To carry out this task we need to find the initial rate of reactions of different concentrations of the substances. We are supplied with the following chemicals, all of known concentration: 0.4 mol dm-3 sodium thiosulphate (Na2S2O3) 2.0 mol dm-3 hydrochloric acid (HCl) Deionised water (H2O) 2HCl(aq) + Na2S2O3(aq) --> 2NaCl(aq) + SO2(g) + S(s) + H2O(l) Many conditions affect the initial rates of reaction including the concentrations of the substances, temperature, total volume and pressure for example. This is all described in collision theory where for molecules to react, they must collide and have the required energy for the reaction. All of the factors will affect the probability of the molecules colliding. Concentration: this is effectively the amount of the molecules in a certain volume. If there is...
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