The Rate of Reaction Of Metals with Acids :: GCSE Chemistry Coursework Investigation

The Rate of Reaction Of Metals with AcidsIntroductionIn this investigation I give be looking at the rate of receptionbetween a metal, which will be magnesium ribbon, and an dosage. Theacids will either be hydrochloric, ethanoic, sulphuric or phosphoricacid. I will be come acrossing let on if the activation energy changes dependingon whether a strong or wakeful acid is use. I will also be investigatingwhether or non there is a change in the order of chemical reaction if a dibasicacid is used instead of a monobasic acid.PlanningThis investigation is therefore split up into separate experiments.Experiment 1 is to find the activation energy for the reactionsbetween hydrochloric acid and magnesium ribbon, thence ethanoic acid andmagnesium ribbon. The only way to find the activation energy is to cartridge clip how long it takes for the reaction to complete at differenttemperatures. Experiment 2 is to find the order of reaction betweenmagnesium ribbon and hydrochloric acid, then sul phuric acid. There areseveral methods that can be used to find the order of reaction I could use an senseless of magnesium ribbon and note down how much artillery has evolved every 10 seconds until the reaction has finished. I could repeat the same procedure as above, only with an excess of acid instead of magnesium ribbon. I could use an excess of acid and change the concentration, this would not require the reaction to be accurate so I would have to time how long it takes for a assign amount of hydrogen gas to form.There are several chemical substance equations that are relevant to thisinvestigation-Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g)Mg(s) + H2SO4(aq) MgSO4 + H2(g)Mg(s) + 2CH3CO2H(aq) Mg(CH3CO2)2(aq) + H2(g)3Mg(s) + 2H3PO4(aq) Mg3(PO4)2(aq) + 3H2(g)In my experiments I will not be using phosphoric acid due to timerestrictions and it is not relevant to the problems I am discussing,because it is a tribasic acid and I am comparing monobasic and dibasicacids.The equation ne eded to find the activation energy in a reaction iscalled the Arrhenius equation.In k = constant EA/R (1/T)Where k = rate constantEA = activation energy (J mol)R = gas constant, 8.31 J K molT = temperature in Kelvininitial Problems- The time restriction makes it extremely hard to find the order of reaction by timing how long it takes for all the magnesium to disappear.- I do not want to directly heat acid as this is dicey when only