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Find the effect of concentration onthe rate of reaction.
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Erin Shaw 13AM Investigation to find the effect of concentration on the rate of reaction. Aim I am going to investigate the effect of concentration on rate of reaction in the reaction between Sodium Thiosulphate and Hydrochloric Acid: 2HCl + Na2S2O3 -->?2NaCl + SO2 + S + H2O Prediction I predict that that the greater the concentration of Sodium Thiosulphate or Hydrochloric Acid, the faster the rate of reaction. I think this because of the collision theory: Increased concentration = Increased number of molecules = number of collisions and, therefore, the rate of reaction. Scientific Background "In order for molecules to react, they must meet. If we imagine molecules moving at random as they do in a gas or solution, then the greater the concentrations, the more frequently they meet. Hence the higher the concentration, the greater the rate of reaction." (Chemistry - Principles and Applications) For any reaction to happen the particles must collide. Increasing the concentration...
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