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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  

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Affect of Concentration - Syringe Test 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 do 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: Magnesium(s) + Hydrochloric acid(aq) Magnesium Chloride(aq) +Hydrogen(g) Mg + 2HCl MgCl2 + H2 Magnesium will react with hydrochloric acid because magnesium is one of a range of reactive metals that react readily with acids, to form the salt and hydrogen gas. 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...

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