Rates of Reaction :: GCSE Chemistry Coursework Investigation

Whether the effectualness of Hydrochloric erosive exit affect the speed of the charge per unit of reaction when reacting with atomic number 12 Ribbon.I want to run into out whether the strength of Hydrochloric acid departaffect the speed of the rate of reaction when reacting with MagnesiumRibbon.VariablesThere are two important independent variables in my investigating thefirst of which is the concentration of the Hydrochloric Acid usedduring the investigation. The concentration of the acid will partlydetermine how fast the reaction takes place, if we put some of the milligram ornament into the HCL at 2molar then it might hold back simply turn within a few seconds and then I would not have had time torecord down any decent enough results to dapple a graph with. The otherimportant independent variable that will affect the speed of the rateof reaction is the length of magnesium ribbon. We choose to put enoughMg Ribbon into the HCL so that it doesnt flirt out straight away butalso so that the examine stops by itself once the gas syringe hasfilled up.The reasons for choosing these two independent variables are that itwould be too hard to try and find a catalyst for this taste acatalyst is a way that increases the rate of a chemical reactionwithout being consumed in the reaction. determination a catalyst for thisparticular experimentation could take months never mind the amount of timewe have been given for our experiment.The independent variable that I will change is going to be thehydrochloric acid, we will use 50ml of HCL at the following molarityconcentrations 2molar, 1.6molar, 1.2molar, 0.8 molar and 0.4 molar. Ihave decided to experiment with these different strengths of molarbecause I think it will give a wide set of results to put into agraph.The dependant variable I shall be measuring will be the time it takesfor the magnesium to tout ensemble react with the hydrochloric acid, Ishall record the times for each concentration of hydrochlori c acidthree times so that it makes it a fair test.To ensure the investigation is fair we will use the same length ofmagnesium ribbon for all the different strengths of hydrochloric acidand the length will be the unmatchable that we picked out from the preliminaryexperiments. Another way in which we will bound the investigation fairwill be to carry out an experiment at each concentration ofhydrochloric acid three times so that we can then get hopefully aroundthe same essence from each experiment, and if there are any anomalieswe can try to apologise why they happened.