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# Investigating the reaction of Soda Mint Tablets with hydrochloric acid

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Introduction

Investigating the reaction of Soda Mint Tablets with hydrochloric acid I am going to investigate the effect of soda mint tablets in hydrochloric acid and how fast carbon dioxide is released when we use more soda mint tablets. Labelled Diagram For my first experiment, I am going to use 1. 50ml of Hydrochloric acid at room temperature. 2. 1 Soda Mint tablet. I am going to measure the speed of the reaction by setting the experiment up like the diagram shown above. I will drop a tablet in the hydrochloric acid and then put the lid on. I will time how long it will take for the water to exit the test tube. This indicates the oxygen being collected. For my next four experiments, I am going to change the amount of tablets used. ...read more.

Middle

I predict that the more soda mint tablets we use the quicker carbon dioxide is collected in the test tube. My theory for my prediction is that I believe the more tablets we use the bigger the surface area will be. More particles will collide which will give off more carbon dioxide. I will keep these the same because if either the temperature or the concentration of the hydrochloric acid was to change it might make the soda mint tablets react faster or slower which would make the experiment unfair. If there were an air bubble in the test tube, that experiment would have an advantage. Results Number of tablets First Experiment Second Experiment Third Experiment Average from the three experiments 1 14.60 14.30 15.86 14.92 2 7.07 5.30 6.68 6.35 3 4.11 6.86 4.82 5.26 4 4.15 5.46 3.14 4.25 5 2.80 2.94 3.05 2.93 Analysis ...read more.

Conclusion

My experiment also went well because my graph shows the more tablets used the faster carbon dioxide is released. If I did my experiment again I would maybe crunch the soda mint tablets to powder and see if that has an effect. If it did have an effect and made the reaction fast this would prove my theory about a bigger surface area. Because crunching the tablets to powder increases the surface area. If I were to do the experiment again without crunching the tablets to powder I would try to make my experiment more accurate by not starting the clock until the oxygen is collected. Because we had a few problems when starting the clock. We could have lost 10th of a second or even a second. Not as accurate as could be, but accurate as we could get it with the equipment we had. ...read more.

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