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In this investigation I will investigate how it would take for the calcium carbonate to react with hydrochloric acid. I will be testing if the big chips of calcium carbonate react faster or the small chips.

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Introduction

Rate Of Reaction Coursework Introduction In this investigation I will investigate how it would take for the calcium carbonate to react with hydrochloric acid. I will be testing if the big chips of calcium carbonate react faster or the small chips. Calcium Carbonate + Hydrochloric Acid --> Calcium Chloride+ Water + Carbon dioxide 2CaCO3 + 4HCL --> 2CaCl2 + 2H2O + 2CO2 There are many factors that can affect the rate of reaction such as the amount of hydrochloric acid and the amount of chips you put in. if there isn't the even amount of chips then the result won't work out to be right for example if there are 15 small chips the u need to have 7 big chips. Prediction I think the smaller chips will react faster then the bigger chips because of the fact the smaller chips have a larger surface area so therefore there are more successful collision occurring. ...read more.

Middle

I will then put either one of the chips in the conical flask and start timer. Apparatus * Measuring cylinder * Conical flask * Stop watch * Water * Big and small chips of calcium carbonate * Hydrochloric acid * Bung * Clean fill * Truff * Goggles Safety I will be taking safety precautions such as to wear goggles this is because I am going to be using hydrochloric acid, which can be harmful. I will also wash my hands straight away if I come in contact with Hydrochloric acid, as it can be Irritant. Fair Test To make this a fair test I will use the same amount of hydrochloric acid at both times, I will make sure that there is an even amount of chips (there will be twist as much small chip then the large chips). I will make sure the is no air in the cylinder when I star the experiment. ...read more.

Conclusion

This could be resolved by maybe drawing up the graph straight after obtaining the results so I could see which results weren't accurate and I could repeat t again. My graph shows clearly that the smaller chips reacted much faster then the bigger chips. Although the results that I got were as accurate as I could make them I did get a few anomalous results (which are circled on my graphs). This could be due to many factors. One reason could be because of inaccuracy of some measurements. The technique, which I used, was accurate because I got reliable results however they could be more precise. This could be resolved by maybe drawing up the graph straight after obtaining the results so I could see which results weren't accurate and I could repeat t again. I would rinse the conical flask after use and dry it well before suing it again so the hydrochloric acid doesn't become dilute. Use hydrochloric acid from the same bottle each time By Jay Gorsia 11s ...read more.

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