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The Effect of Concentration on the Rate of Reaction between Hydrochloric Acid and Sodium Thiosulphate
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The Effect of Concentration on the Rate of Reaction between Hydrochloric Acid and Sodium Thiosulphate Introduction In this experiment we are going to react Hydrochloric Acid with Sodium Thiosulphate. We are going to see what effect the concentration of Hydrochloric Acid has on the rate of reaction. We are going to keep the concentration of the Sodium Thiosulphate constant. We are going to vary the concentration of the Hydrochloric acid. The total volumes of the two solutions will remain constant therefore keeping the overall volume constant. Na2S2O3 + 2Hcl S + SO2 + 2NaCl + H2O Scientific Knowledge Particles, such as molecules, atoms or ions, must collide before a chemical reaction can take place. This diagram shows this: So the increase in concentration means increase in rate of reaction. If you doubled the concentration you would also double the amount of the product that is produced. This is explained in our textbook Longmans GCSE chemistry: "If you increase...
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