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How does changing the concentration of the Hydrochloric acid affect it reactions with Magnesium? Below is a short sample of this essay. If you register now you could be reading the rest of this essay (and over 75,000 others from GCSE, A Level and University students) in under two minutes. Registered users should log in to view the full essay. ... ave enough velocity to cause a reaction. Since there are more collisions the chemical reaction takes place faster. A tangent was drawn at the beginning of each curve and its gradient calculated, the gradients are shown in the table below. Evaluating Evidence I believe that the experiment was successful but some of the results were unexpected/unreliable. The lines on the graphs for 20OC and 30OC cross, this doesn't affect my results since I am only concerned with the initial rate or reaction but it was unexpected. In graph 3 the rate...

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