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The reaction between hydrochloric acid and sodium thiosulphate.
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| Submitted: Thu Jul 11 2002
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Investigation into the factors that affect the rate of a reaction In this investigation, I will be studying the factors that affect the rate of reaction. In this case, the reaction between hydrochloric acid and sodium thiosulphate. Na2S2O3 (aq)+ 2HCl(aq) 2NaCl(aq)+S(s)+SO2(g) When hydrochloric acid is added to sodium thiosulphate, the chemicals react giving solid sulphur as one of the products. This is a precipitation reaction. By watching the speed at which the sulphur has formed, we can find out the rate of reaction. A cross can be marked on a piece of paper, and a flask of sodium thiosulphate can be placed on top. By adding hydrochloric acid to the sodium thiosulphate, we can time how long it takes for the view of the cross to become obscured by the sulphur. We can then find out the rate of the reaction. What is Rate? Chemical reactions can be seen...
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