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To determine how changing the concentration of a reactant (Na S O ) affects the rate of the reaction.
Member rating: No Rating | Words: | Submitted: Thu Mar 17 2005
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Rate of reaction Aim: To determine how changing the concentration of a reactant (Na S O ) affects the rate of the reaction. Prediction: I predict that when we increase the concentration, the rate will increase; therefore there are more particles and a greater probability of a collision. If more particles are present in the same volume, they will be closer together. This means they have a higher probability of colliding and speeding up the reaction. If we double the concentration, the rate will also double. Diagram: Apperatus: 200 ml Beakers - To hold solutions Lined paper - To determine when the mixture is cloudy Timer - To time the rate of reaction Hydrochloric acid Sodium thiosulphate Water 100ml measuring cylinder 10ml measuring cylinder Fair Test: For a fair test I must do: * Make sure the beakers are thoroughly cleaned after each test. * Use same paper in each test. * If the paper gets wet, change the paper, but same kind. * Make sure the same person is recording...
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