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Investigate how the temperature of hydrochloric acid effects the reaction between hydrochloric acid and marble.

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Introduction

Abdulrehman JAVAD 11F George Mitchell School (13410) Science Coursework Rates of reaction Aim: To investigate how the temperature of hydrochloric acid effects the reaction between hydrochloric acid and marble. Introduction: I will be conducting an experiment on the rate of reaction for my GCSE coursework. And I will be investigating how the Temperature of hydrochloric acid effects the reaction between hydrochloric acid and marble chips; I will be reacting hydrochloric acid with marble chips. I will be checking the mass of hydrochloric acid and marble chips in test tube after every 10 seconds the mass of hydrochloric acid and marble is decreased because when ever acid reacts with marble its produces gas e.g. in this experiment carbon dioxide is given off. Prediction: I predict the higher the temperature, the faster the reaction rate. This is due to the kinetic theory. The more heat that is given to matter, the faster the particles moves. This happens in the acid, so the faster the particles move, the faster the reaction rate due to more collisions between the marble chips and the acid. ...read more.

Middle

As I will be using a conical flask its wide bottom gives a more secure base. * I will ensure that I do not use too much acid, which could escape and spill when the temperature is raised. Also, I must be careful especially with the stronger morality acid because it will be corrosive so I must make sure I do not spill it on my hands or more especially in my eyes. One way to avoid this is to be extremely careful and wear safety goggles. Fair test: To make sure that the test is done as accurate and as fair as it can be: * I will not change the amount of marble in each test this is because I want to make it consistent * I will change the amount of water this will show if a weaker acid will change the reaction rate. * I will also change the amount of acid to show if it will make the reaction quicker by the quantity of acid I add. * I will keep the time same ,so that each test will have the same amount of time to react and this will then show what effect different amount of acid , water and the temperature will have. ...read more.

Conclusion

From looking at my results I can see that there were no poor results which were a good thing and it proves that everything went very well. The only possibility of error was if the temperature of the acid had changed from when I did the first reading to the end i.e. from when I did the first experiment the room temperature did not change and, hopefully the acid would have been the same temperature. From looking at my results I am able to conclude that the more concentrated the acid the quicker the reaction happened and the more gas was produced. Before I did the experiments I predicted that the more concentrated the hydrochloric acid was the quicker the carbon dioxide would be produced. This was completely correct because what I thought did happen. At this point I am able to answer it my aim which was how the temperature of hydrochloric acid effects the reaction between hydrochloric acid and marble? The answer to this would be that by changing the concentration of the hydrochloric acid it will either make the rate of reaction slower or quicker and more or less gas would be produced depending on whether the concentrations were more or less. ...read more.

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