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To find the perfect acid concentration to use for an assessed practical
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Preliminary Work Aim The aim of this experiment is to find the perfect acid concentration to use for an assessed practical. Method I accurately measured 25cm? of 1M Hydrochloric Acid and poured into a beaker. I dropped 1cm Magnesium into the Hydrochloric Acid and timed how long the Magnesium took to react with the Hydrochloric Acid. I did this over again with the same quantity of Magnesium and Hydrochloric Acid, but changed the acid concentration (the variable). The concentrations, which I used, were: 1.0M, 1.5M, 2.0M, 2.5M and 3.0M. Results: Acid Concentration/M Time/S Rate/cms-1 1.0M 57.45s 0.0174 1.5M 40.38s 0.0274 2.0M 40.00s 0.0250 2.5M 08.64s 0.1157 3.0M 48.00s 0.0208 Conclusion I think that a Hydrochloric Acid concentration of 1M would be most suitable for the assessed practical. I believe this because it had an appropriate rate of reaction at room temperature, and therefore should have a good rate of reaction when heated. I think 2.5M would be the worst choice of acid concentration because the time would be too little, especially when...
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