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Try and increase the rate of reaction when creating Carbon Dioxide, we will be using 1 gram of Sodium Carbonate and 20cm3 of 1.0 mole dm-3 Sulphuric Acid at 20 degrees centigrade

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Introduction

Ivor's Problem Introduction In this investigation I am going to try and increase the rate of reaction when creating Carbon Dioxide, we will be using 1 gram of Sodium Carbonate and 20cm3 of 1.0 mole dm-3 Sulphuric Acid at 20 degrees centigrade. I will try to improve the rate of reaction by heating up the acid, in turn this will increase the acid molecules speed, making them move around more quickly and have more collisions with the Sodium Carbonate's base area, during a certain amount of time. But if the acid is not heated the molecules are not going to be as violent, so there would not be as many collisions in the same amount of time, so the speed of the reaction would be slower. To heat the acid I will first put it into a test tube and then I will put the test tube into a water bath, the water bath will be heated from a Bunsen burner underneath it (Fig 1). I will be heating the Sulphuric acid up to 5 different temperatures. 20, 40, 60, 80 and 100 degrees centigrade. I will put my results that I have found out into a table, I predict that as the temperature increases so will the rate of reaction. ...read more.

Middle

of every 20�c, this would make it easier for me to see the increase in speed, it would also allow me to narrow down the experiments optimum temperature, the optimum temperature is the temperature in which the reaction takes place the quickest, I found that this was around 60�c. I found out that increasing the temperature not only makes the particles move faster which in turn makes them collide more frequently, but it also increases the energy of the collisions, so there will be more particles being exchanged in a shorter amount of time. What happened When the Sodium Carbonate was added to the acid, the acid particles collided with the Sodium Carbonate particles, normally the acid particles collide with the Sodium Carbonate particles quite slowly, but when heated up the acid particles get more energy and move around more, so they collide more frequently with the Sodium Carbonate particles. Also when the acid particles are heated up the activation energy is increased, this is the energy that that is used during successful collisions where a reaction takes place, if there is not enough of this energy then the particles will just bounce off each other. During the reaction the compound Sodium Carbonate's particles collide with the acid, because the particles of acid are more reactive than ...read more.

Conclusion

the liquid may evaporate leaving the acid atoms behind, this could also make the experiment unfair because the acid would be more concentrated. I could also have tested the ph/strength of the acid before I put the sodium carbonate in to make sure that one of the acids I used was not stronger than any of the others, if any acid was stronger than any other acid we used the experiment would be unfair. When doing the experiment that used more concentrated acid I would like to have been able to test the temperatures more accurately before I put the Sodium Carbonate in it, if the acids were all different temperatures then my results would be incorrect, a less concentrated acid is hotter than a more concentrated acid, it could have dissolved the Sodium Carbonate quicker than a more concentrated acid. Evaluation I thought that overall the experiment was successful, the tests were fair and a digital timer timed them quite accurately. I got the results I expected to see, I expected too see the rate of reaction increase as the temperature increased. I am pleased with the outcome because it proves that when creating Carbon Dioxide heat can effect it a lot, it speeds up collisions between particles which means more reactions in a shorter time ...read more.

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