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What factors affect the rate at which hydrochloric acid reacts with sodium thiosulphate?
Member rating: No Rating | Words: | Submitted: Mon Mar 21 2005
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What factors affect the rate at which hydrochloric acid reacts with sodium thiosulphate? Planning: This investigation is about rates of reaction and what affects them. In this case I am going to look at hydrochloric acid and sodium thiosulphate which is a precipitation reaction. They react as in the equations below: Sodium thiosulphate + hydrochloric acid -> sodium chloride + sulphur + sulphur dioxide + water Na2S2O3(aq) + 2HCl (aq) -> 2NaCl (aq) + S(s) + SO2(g) + H2O(l) For a reaction to occur the reactants must a) collide b) Collide with sufficient energy in order to make a successful collision. The collision theory is useful when carrying out this experiment because it explains why rates of reactions differ. The concentration of a solution effects the rate of reaction because the rate depends on how frequently the molecules of the reacting substances collide. A more concentrated substance has more molecules in a given...
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