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An Investigation Into The Rate Of Reaction Between Sodium Thiosulphate and Hydrochloric Acid.
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An Investigation Into The Rate Of Reaction Between Sodium Thiosulphate and Hydrochloric Acid The purpose of this investigation / experiment is to observe the rate of reaction between sodium thiosulphate and hydrochloric acid. When these react the colour of the solution changes eventually to an opaque creamy solution. The reaction that will take place is: Na2S2O3 + 2HCl ? 2NaCl (aq) + SO2 (aq) + S (s) + H20 Sodium Hydrochloric Sodium Sulphur Sulphur Water Thiosulphate Acid Chloride Dioxide The reason the solution becomes opaque is that one of the products of the reaction is sulphur and this solid forms in the solution and therefore makes it go cloudy, and opaque. So, to compare reaction times I shall use a light sensor under the solution so that I know when each solution has reached the same stage, as the same amount of light will be let through the solution. The variable that I am to...
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