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Investigate the effect of concentration on the rate of a reaction using the reaction between Sodium Thiosulphate and Hydrochloric acid as an example.
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Rates of Reaction Donna Murray 10m2 Aim: To investigate the effect of concentration on the rate of a reaction using the reaction between Sodium Thiosulphate and Hydrochloric acid as an example. Background: A reaction will only occur where the particles of the reactants meet and combine. This is called the collision theory. That means that it stands to reason that to increase the rate of reaction it is necessary to cause more particles to collide harder and make it happen more often. Molecules must collide before they react. Before colliding molecules react, they must have energy equal to or greater than the activation energy for the reaction. It is possible, using the collision theory, to calculate the number of collisions occurring or second. The energy needed to start a chemical reaction is called activation energy. The rate of reaction is how fast the reaction is. An example of a reaction that is slow is...
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