Rates of Reaction

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The Effect of Acid on the Rate of Reaction with Magnesium Aim: To find out how the concentration of hydrochloric acid affects the rate of reaction with magnesium ribbon. Hypothesis: I think that the lower the concentration of Hydrochloric acid, the slower the rate of reaction with Magnesium ribbon. The reason why is because there are less particles in the same volume so less collisions are possible every second, therefore less effective collisions will occur. Preliminary work: I did an experiment before to find out how the concentration of hydrochloric acid affects the rate of reaction with Sodium Thiosulphate. Preliminary work backs up this hypothesis. Because, when doing the practical previously, I found out that the rate of reaction between Sodium Thiosulphate and Hydrochloric acid depends on the amount of concentration, which becomes faster with a higher volume of concentration. [IMAGE]Mg + 2HCL MgCl2 + H2 This equation shows the reaction that will occur Apparatus: Magnesium ribbon 2M Hydrochloric acid Distilled water Stop clock Conical flask Delivery tube Measuring cylinder Measurements: Here are the measurements of the hydrochloric acid and the magnesium ribbon, which I am going to use in the experiment. Hydrochloric acid 1. 50cm³ of hydrochloric acid 2. 40cm³ of hydrochloric acid 3. 30cm³ of hydrochloric acid 4. 20cm³ of hydrochloric acid 5. 10cm³ of hydrochloric acid Water 1. 0cm³ of water 2. 10cm³ of water 3. 20cm³ of water 4. 30cm³ of water 5. 40cm³ of water Magnesium Ribbon 1. 2cm magnesium ribbon 2. 2cm magnesium ribbon 3. 2cm magnesium ribbon 4. 2cm magnesium ribbon 5. 2cm magnesium ribbon Method: * Collect and set up apparatus shown in diagram * Measure 50cm³ of acid and pour acid into a conical flask, add 2cm in length

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