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Investigate the effect of concentration on the rate of a reaction.
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Disappearing cross experiment Chemistry Coursework: Rate of Reaction Planning Aim: To investigate the effect of concentration on the rate of a reaction. Prediction: 'I predict that as the concentration of the solution decreases the rate of reaction will decrease too.' Therefore the length of time for the cross to disappear will increase as the concentration is decreases. I think this because more molecules are present in a higher concentration and therefore there is more chance of them colliding with each other. The more particles there are the more chance there is of having more energy than the activation energy. It means the solution will be very crowded and it doesn't increase the speed at which they collide only changing the temperature would give the energy to do this. There are many factors that also very the rate of reaction. The surface area because the more the area there is on the surface the more chance the...
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