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To carry out a complete kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid:
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Minoo Ramanathan 11 KB COMPLETE KINETIC STUDY Planning A & B Lab Aim: To carry out a complete kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid: Equation: Na2S2O3(aq) + 2HCl(aq) --> 2NaCl(aq) + S(s) + SO2(g) + H2O(l) PART A To deduce the order of the reaction with respect to the concentrations of sodium thiosulphate and hydrochloric acid the experiment will be carried out at constant temperature and the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate will be measured for a constant volume of solution that uses 3 varying concentrations of Na2S2O3(aq) while maintaining the concentration of HCl(aq) and 3 varying concentrations of HCl(aq) while maintaining the concentration of Na2S2O3(aq). The rate of the reaction can be determined by the calculating the amount of sulphur produced in the time recorded. This is given by the equation: Rate =...
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