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The effect the concentration has on the rate of a chemical reaction.
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| Submitted: Thu Jul 11 2002
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The effect the concentration has on the rate of a chemical reaction. Aim The aim of this coursework is to determine the effect concentration has on the rate of a chemical reaction. Hypothesis I predict that as the concentration is increased, the faster the cross will disappear. The more concentration added, the cloudier the solution will become resulting in the cross disappearing faster. Also, I believe reducing the concentration will have the opposite effect. The less concentration involved, the longer it will take for the solution to become cloudy and the cross will stay visible for longer. The apparatus needed are: ? A conical flask ? 2 measuring cylinders (measuring up to 50cm³) ? A piece of paper ? A pencil or pen ? A stop clock ? 150cm³ Sodium Thiosulphate ? 25cm³ Hydrochloric Acid ? 40cm³ Distilled water Method Firstly, draw a cross on the piece of paper. Next, measure out 50cm³ of sodium thiosulphate and place it into the conical flask. Measure out...
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