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# Rates Of Reaction Between CaCo3 and HCL of different concentrations.

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Introduction

Rates Of Reaction Between CaCo3 and HCL of different concentrations. What I am Doing : Aim I am investigating the reaction of solid Calcium Carbonate with Hydrochloric Acid, The word equation for this is, CaCo3 + 2HCL ? CaCL2 + CO2 + H2O I aim to produce a valid set of results to produce a good graph for evaluation. What I Already Know A reaction occurs when particles collide. This process is based on random particle movement. So therefore, the more particles you have in a space, the more likely they are to collide. Therefore making the reaction accelerate. This theory can be proved if you compare the rates of reaction with marble in hydrochloric acid. If the acid is of a higher concentration, the reaction will be quicker. Also if the particles have more energy, they will be travelling faster, making them collide more frequently. Prediction When the concentration of acid increases, more gas will be given off faster. ...read more.

Middle

Amount Of Co2 Lost = 0.22 1.6M Amount Of Co2 Lost = 0.31 2.0M Amount Of Co2 Lost = 0.32 Test 2 0.4M Amount Of Co2 Lost = 0.13 0.8M Amount Of Co2 Lost = 0.18 1.2M Amount Of Co2 Lost = 0.21 1.6M Amount Of Co2 Lost = 0.27 2.0M Amount Of Co2 Lost = 0.34 Test 3 0.4M Amount Of Co2 Lost = 0.14 0.8M Amount Of Co2 Lost = 0.15 1.2M Amount Of Co2 Lost = 0.23 1.6M Amount Of Co2 Lost = 0.29 2.0M Amount Of Co2 Lost = 0.35 Average Results And Graph/Table 0.4M Amount Of Co2 Lost = 0.13 0.8M Amount Of Co2 Lost = 0.17 1.2M Amount Of Co2 Lost = 0.22 1.6M Amount Of Co2 Lost = 0.29 2.0M Amount Of Co2 Lost = 0.34 Mole Of Acid Mass Of Beaker Beaker + HCL + Acid Mass after Experiment Mass Loss Time Of Experiment 0.4 98.37 117.52 117.39 0.13 2 mins 0.8 98.37 117.68 117.51 0.17 2 mins 1.2 98.37 117.93 117.71 0.22 2 mins 1.6 98.36 118.12 117.83 ...read more.

Conclusion

this neutralises and starts to slow down which is why the less acid you have the quicker this happens because there isn't enough acid to react with. Evaluation In my opinion the investigation went OK. I think I did take a sufficient amount of readings but of course it would have helped if I had another set of results but you could say that for every experiment that you do because it would give you a better average. I think that doing 3 runs was a good idea because some errors were made which affected the results, but by averaging the data obtained, the results were more precise. There was one anomalous result that I encountered but we did a rerun and quickly found out that is was just a weighing error. As the experiments were done on different days, the results could have been affected due to a different room temperature, or humidity. Although I think that these differences are negligible because the weather was the same both days ( roughly ). ?? ?? ?? ?? ...read more.

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