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Testing the effect of surface area on the speed of reaction between calcium carbonate and hydrochloric acid.

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Introduction

Testing the effect of surface area on the speed of reaction between calcium carbonate and hydrochloric acid I am trying to find out if there is any effect on the speed of reaction between hydrochloric acid and the surface area of calcium carbonate. I think that an increase in the surface area of calcium carbonate will speed up the reaction because the particles in the hydrochloric acid solution will have more area to work on therefore there will be more useful collisions between particles as both reactants. - Increase the temperature ~ the particles move quicker consequently, there are more collisions. - Concentration of the Hydrochloric Acid ~ If the acid is more concentrated than there is more particles of reactant knocking about. ...read more.

Middle

2. Drop the Calcium Carbonate (1g in big pieces) and start the stopwatch. 3. Watch the reaction, when the Calcium Carbonate has totally reacted with Hydrochloric Acid and no solid can be seen stop the stopwatch. 4. Record the results in a table. POWDER (1g) SMALL PIECES (1g) LARGE PIECES (1g) 5. Repeat instructions 1-4 twice again but this time instead of using 1g of big pieces of Calcium Carbonate use 1g of small pieces and then 1g of powder. 6. Repeat the experiment thrice to get an average time. 7. Wash away all equipment once finished all 9 experiments. 1. Wear safety goggles throughout the experiment to protect your eyes. 2. Make sure you handle the Calcium Carbonate and Hydrochloric Acid with care, keeping them away from your eyes and try not to sniff them. ...read more.

Conclusion

SMALL PIECES (1g) LARGE PIECES (1g) 1 4.36s 19.44s 37.42s 2 5.07s 21.37s 39.43s 3 4.57s 18.58s 38.37s Average 5.07s 20.20s 38.41s At first, I had an experiment in which I was going to measure the amount of carbon dioxide given off in this reaction but then due to the restricted amount of time we were given I had to alter it to the one I have written above. This too I did not finish in time therefore I obtained the results from the teacher. I do not think my results are anomalous because all my results are in a way I predicted they would be. If I was to do this experiment again I would work faster so I could get the results myself rather then of someone else. 09/05/2007 23:44 C:\WINDOWS\Desktop\School Work\SCIENCE\Testing the effect of surface area on the speed of reaction between calcium carbonate and hydrochloric aci1.doc Mehjabeen Iqbal 10NDM Page 1 5/9/2007 ...read more.

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