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The Effect of Concentration on the initial rate of a chemical reaction
Member rating: No Rating | Words: | Submitted: Wed Aug 27 2003
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Matthew Jaroszewicz Investigation: The Effect of Concentration on the initial rate of a chemical reaction The Reaction: Mg(s) + 2HCl(aq) MgCl2 (aq) + H2 (g) Equipment Chemicals * Graduated gas syringe (+/- 0.5cm3) Magnesium Ribbon * Conical Flask 2 Molar hydrochloric acid * Thermometer * Stopwatch * Clamp/Stand * Burettes (+/- 0.05cm3) Diagram The Magnesium ribbon is to be put into the conical flask of Hydrochloric Acid and every 10 seconds the total amount of Hydrogen produced is read for a total of 2 minutes. I will make the test as fair as possible by making sure that the controlled variables are very much controlled. Controlled Variables Volume of acid - I have chosen to use 20cm3 of acid. I came to this decision because in preliminary experiments I used less acid and found that the reaction was too slow but too much acid would be a waste. 20cm3 would be perfect and it divides easily, therefore calculating how to dilute the acid precisely will be easier. Temperature...
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