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How does the Concentration of Sodium thiosulphate (Na S O) solution affect the rate of reaction?
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How does the Concentration of Sodium thiosulphate (Na S O) solution affect the rate of reaction? Aim: To investigate the affect of concentration on the rate of reaction. Theory Sodium thiosulphate reacts with HCl acid to give fine suspension of sulphur. Sulphur gives the cloudy effect: Na S O + 2HCl NaCl + SO Fair test In this experiment we are trying to find the rate of reaction using concentration as a factor, so there is a number of things we need to make sure we do to keep it a fair test. Firstly, we need to keep a chemical at a constant concentration. So, in this experiment we have chose to keep hydrochloric acid at a constant concentration. We could have, however, used sodium thiosulphate as a constant, but we had chose to use hydrochloric acid. Next we must make sure that the solution is kept at a constant volume throughout the experiment....
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