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My aim in this experiment is to react hydrochloric acid with magnesium in different concentrations to see if gas will be produced quicker or to see a change in rates of reaction.

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Introduction

Planning My aim in this experiment is to react hydrochloric acid with magnesium in different concentrations to see if gas will be produced quicker or to see a change in rates of reaction. I am going to wear goggles as a safety precaution as the acid may end up in an eye. As another precaution I am going to be careful when handling the acid and magnesium and I will not eat the magnesium or drink the hydrochloric acid. Method I am going to make sure that this will be a fair test. To do this I am going to use the correct amount of acid in each experiment and I will use the same amount of magnesium in each experiment as well. We are going to change the concentration of the acid by adding 5cm cubed of acid in the first and 0cm cubed of water , in the second I will change the concentration and use 4cm cubed of acid and 1cm cubed of water, in the third I will use 3cm cubed of acid and 2cm cubed of water, in the fourth I will use 2cm cubed of ...read more.

Middle

22 24 23 25 50 21 23 24 25 25 60 21 23 24 25 25 3CM Cubed HCl 2CM Cubed H20 Time (secs) Volume Of Gas 1 2 3 4 5 0 0 0 0 0 0 10 13 8 9 10 7 20 20 13 14 15 13 30 23 18 18 17 19 40 25 22 23 22 27 50 25 25 26 24 27 60 25 28 29 28 29 2CM Cubed HCl 3CM Cubed H20 Time (secs) Volume of Gas 1 2 3 4 5 0 0 0 0 0 0 10 8 15 8 12 15 20 15 22 14 19 22 30 23 24 18 25 28 40 25 26 23 28 30 50 28 29 26 30 37 60 32 33 26 31 40 1CM Cubed HCl 4CM Cubed H20 Time (secs) Volume of Gas 1 2 3 4 5 0 0 0 0 0 0 10 7 6 8 8 5 20 12 10 13 15 10 30 17 15 20 21 14 40 20 19 23 21 17 50 23 24 23 22 20 60 25 26 24 27 21 Analysis The lines on my graph show the different rates of reaction of different concentrations of hydrochloric Acid with 3cm of Magnesium. ...read more.

Conclusion

the average amount of gas released was 32.5cm3 of gas. On the fifth and final reaction (1cm3 HCl 4cm3 H2O) the average amount of gas released after one minute was 24.6cm3 of gas. The reaction was between Hydrochloric acid(HCl) and Magnesium(Mg). This is what the reaction was: Mg+2HCl MgCl2 + H2 Evaluation This experiment went quite well even though in the experiment some things went wrong. We think the results went wrong because we let some gas escape (by accident) on some of the reactions and not (the way it should have been on all) on the rest of the reactions. The beginnings of the reactions were correct but because of the loss of gas the ends of the lines turned out incorrect. The lines on the graph were, I think, near enough to what they should have been and I would expect others to get almost the same as what I got for the lines on the graph. If I could have done this experiment again I would have tried to put the lid on at the same time each time that I did the experiment. The experiment was a success apart from the loss of gas but I think it was great. ...read more.

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