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What Affects the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate?
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PLANNING: For this experiment I am going to test how temperature affects the rate of reaction between hydrochloric acid and calcium carbonate. There were many variables that I could have chosen such as: Factors: Surface Area: This would have meant changing the area of the calcium carbonate by grinding it up into smaller pieces. E.g. from a lump, to chips, to powder. This would mean that there would be more surface area meaning a higher rate of reaction because there is a higher area of contact between the reactants. The acid can get to all the calcium carbonate quicker. Concentration: This would have meant changing the concentration of the acid from 1 mole, to 1.5 mole, to 2 mole etc. This would increase the rate of reaction because there would be more acid in the experiment in relation to chalk, no matter what volume was in the beaker. Temperature: This meant changing the temperature of the acid. If the temperature is increased, then the average speed of any one particle will increase. This will then mean that there will be more collisions between particles causing the rate of the reaction to increase. What We Chose: I could have chosen any factor to test whether certain variables affected the rate of reaction but thought that changing the temperature would change the rate of reaction the most and would be a successful experiment.
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