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Which substance is best at nueutralising Hydrochloric Acid?

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Investigation: Which substance is best at nueutralising Hydrochloric Acid? By Rob Arnold The planning section. Planning introduction Over the past few weeks we have been learning about most chemical reactions, acids and bases, and endothermic and exothermic reactions are the main things do to with this investigation. A base is used usually to neutralise acids, we are in the investigation looking to see weather Magnesium, Magnesium Oxide, or Magnesium Carbonate can significantly neutralise Hydrochloric acid. Aim We aim to in this experiment to see if one of Magnesium, Magnesium Oxide, or Magnesium Carbonate can neutralise Hydrochloric Acid in an exothermic reaction to a PH of seven. Equipment The items needed to do this investigation are: 1. A test tube rack. 2. Three test tubes. 3. Measuring cylinder. 4. Thermometers. 5. A small volume of Hydrochloric acid. 6. Magnesium. 7. Magnesium Carbonate. 8. Magnesium Oxide. 9. Universal Indicator. 10. U.I Chart Key factors The key factors in this experiment are: * Volume- The volume of the Hydrochloric Acid could change the effect of the base, this is because to neutralise the acid you may need a small amount of acid or there may not be enough base particles to neutralise all the acid particles. This is also an easy factor to change. ...read more.


* Only change one variable at a time. * Wash and dry all test tubes well between tests. * Do not change the method as you get half way through the experiments. Safety To keep safe we have to be sensible and follow the usual rules of a science lab, but we have to remember an extra one. * As this is an exothermic reaction we should be aware that the test tube will get hot as the reaction takes place, so try not to burn your hands if the case is the reaction causes the heat to go to a very high level. Prediction and comments Comments We hope to get everything done within the two lesions, if we are unable to do so, we will be prepared to cut the Factor "Volume". Prediction I predict that the Magnesium Oxide will neutralise the HCL because when an acid reacts with a metal oxide, it produces salt and water, which the latter is meant to be tenths of being PH7 which is neutral, the others (metal and carbon) are meant to produce other substances, like carbon dioxide and hydrogen, as well as salt and water. I also predict that the temperature will rise in each as we know that it is an exothermic reaction in each, but I think that Magnesium will increase the temperature the ...read more.


I say this because when you look at the two tables of results, then remember how much acid and base there was in each test, then in the middle of the two results is PH seven, so if you start using the middle amount of the two amounts of base and acid, you should get PH seven eventually. Results conclusion and evaluation In conclusion, I believe that the methods we chose gave us poor results, if we chose different methods of how much acid or base we planned to use, I think we may have got better results. I'm slightly disappointed at the results because of the effort the three of us put into the Investigation, however, I think our experiment was not a very fair test. I also believe if further investigating was done, I would think that the best neutralising base would be the Magnesium Carbonate. The results say that effectively the Magnesium Carbonate is the best to neutralise Hydrochloric acid anyway, as in both tests it came to the closest to being to PH seven, and I think with further tests that would get to PH of seven but there is really no fair test that could get results to show that there is a better neutraliser. It suggests that if you were to judge on Temperature, then the base that changes dramatically with its PH is Magnesium, stating that this could be the quickest Neutralising base as it changes quickly too. ...read more.

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