Reaction Between Hydrochloric Acid and Magnesium

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Reaction Between Hydrochloric Acid and Magnesium Introduction In the reaction between hydrochloric acid and magnesium, the hydrochloric acid will dissolve the magnesium and produce hydrogen gas. All chemical reactions involve reactants which when mixed may cause a chemical reaction which will make products. In my case the reactants are hydrochloric acid and magnesium ribbon. The chemical reaction takes place when the magnesium ribbon is dropped into the hydrochloric acid. The products that are formed during this reaction are hydrogen gas and magnesium chloride. The formula equation for this experiment is: Mg + 2HCl (r) MgCl2 + H2 Magnesium + Hydrochloric acid (r) Magnesium Chloride + Hydrogen (s) (Aq) (aq) (g) Magnesium will react with hydrochloric acid, because it is higher in the reactivity series that hydrogen. When the two chemicals react a displacement reaction will take place and the magnesium will displace the hydrogen in the hydrochloric acid forming magnesium chloride and hydrogen gas. Reactivity Series K (potassium) Na (sodium Li (lithium) all too dangerous to react with a strong acid Ba (barium) Ca (Calcium) Mg (magnesium) - Al (aluminium) manageable metals Zn (zinc) these metals will react with hydrochloric acid as they Fe (iron) they are higher in the reactivity series than hydrogen Sn (tin) and so a displacement reaction will take place Pb (lead) ¯ H (hydrogen) Cu (copper) Hg (mercury) none of these metals will react with hydrochloric Ag (silver... ... middle of paper ... ...constantly changing during the reaction because as time goes on there are fewer acid molecules. There are fewer acid molecules because when the acid reacts the same particle cannot react again, so there are less to end with than there are to start with. As time goes on the number of acid particle decrease so there is less chance of a successful reaction to take place. Before I started the experiment I made up a prediction. I predicted that the more concentrated the acid solution the faster the magnesium and hydrochloric acid will react. I thought that this would happen because when there are more acid particles in the test tube the more chance there is of a successful collision. I was right in my prediction but I did not predict that the rate of reaction slows down as time goes on which did happen in my experiment.
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