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Investigating how concentration affects the rate of reaction
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Investigating how concentration affects the rate of reaction Aim To investigate how changing the concentration of hydrochloric acid (HCl) affects the rate of reaction when reacted with magnesium ribbon (Mg.) The chemical word equation for this reaction is Magnesium + Hydrochloric acid ? Magnesium Chloride + Hydrogen. The chemical symbol equation is Mg + HCl ? MgCl2 + H2. Prediction When the magnesium reacts with the hydrochloric acid, it is expected that the rate of reaction increase as the concentration of the acid increases. (Co-ordinated Science, 'Gallagher & Ingram.) When experimenting how concentration of a reactant affects the rate of reaction, the result fits into one of three orders of reaction. 0 order graph Rate/ cm3s-1 Concentration/Molar For a zero-order reaction, the rate of reaction remains constant and nothing will happen to the rate however much the concentration is altered. 1st order graph Rate/ cm3s-1 Concentration/Molar For a first-order reaction, as the concentration increases the rate will increase proportionally....
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