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To Find Out How Much Surface Area Affects the Rate of a Reaction Between a Potassium Tablet (K2co3) and Hydrochloric Acid (Hcl).

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Introduction

The Rate of Reaction Equation K2CO3 + HCl KCl + H2O + CO2 Aim The aim of the experiment is to find out how much surface area affects the rate of a reaction between a potassium tablet (K2CO3) and hydrochloric acid (HCl). Variables The variables for this experiment include: ? The temperature of the HCl. ? The concentration of the HCl. ? The surface area of the K2CO3. For this experiment I will be testing the surface area. Prediction I think that as the surface area of the surface area of the K2CO3 decreases the rate of the reaction will increase. ...read more.

Middle

Repeat this experiment with exactly the same quantities. Then repeat this (including the repeat with the same quantities) cutting the K2CO3 into 1/2, 1/4 and 1/8. Results Time Taken (mins) 1st 0:30 1:00 1:30 2:00 2:30 3:00 Attempt 1 34 50 80 90 94 95 (amount 1/2 34 58 76 80 82 --- of gas 1/4 39 50 72 75 --- --- Produced ml) 1/8 62 73 80 --- --- --- ----------- --------- --------- --------- --------- --------- --------- ----------- 2nd 1 63 84 100 105 --- --- Attempt 1/2 62 81 82 90 100 --- 1/4 57 82 99 102 102 1/2 --- 1/8 34 72 79 80 --- --- Conclusion The results should have concluded my theory that as the size of the K2CO3 decreased the rate of the reaction should have increased. ...read more.

Conclusion

This is shown in the diagrams below: These diagrams are showing that because the K2CO3 particles are more dispersed in the right diagram than the left and so there is more chance of a HCl particle hitting a K2CO3 particle. Evaluation This experiment was badly done by me. This is partly because I was working on my own (there are no other reasons that I can think of). I think I could have taken more time on it and better care. The second set of results reflects the value of the results better than the first set of results. In all of the tests that I did there were three ominous results and this have been highlighted on the graphs. Overall the experiment did not turn out the way that it should have. ...read more.

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