Rates of Reaction :: GCSE Chemistry Coursework Investigation

Whether the strength of Hydrochloric acid go go forth affect the revive of the rate of answer when reacting with Magnesium Ribbon.I want to find turn out whether the strength of Hydrochloric acid willaffect the speed of the rate of reaction when reacting with MagnesiumRibbon.VariablesThere are two important independent varyings in my investigation thefirst of which is the dumbness of the Hydrochloric Acid calldduring the investigation. The concentration of the acid will partlydetermine how fast the reaction takes place, if we put rough of theatomic number 12 ribbon into the HCL at 2molar then it might have apparentlydissolved within a few seconds and then I would not have had time torecord down any decent seemly results to plot a graph with. The otherimportant independent variable that will affect the speed of the rateof reaction is the length of atomic number 12 ribbon. We need to put enoughMg Ribbon into the HCL so that it doesnt run out straight away butalso so that the experiment stops by itself once the gas syringe has alter up.The reasons for choosing these two independent variables are that itwould be too hard to demonstrate and find a catalyst for this experiment acatalyst is a substance that increases the rate of a chemical reactionwithout being consumed in the reaction. Finding a catalyst for thisparticular experiment could take months never mind the amount of timewe have been induen 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 heady 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 milligram to completely react with the hydrochloric acid, Ishall record the measure for each concentration of hydrochloric acidthr ee times so that it makes it a fair test.To curb the investigation is fair we will use the analogous length ofmagnesium ribbon for all the different strengths of hydrochloric acidand the length will be the one that we picked out from the preliminaryexperiments. Another way in which we will keep 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 outcome from each experiment, and if there are any anomalieswe can try out to explain why they happened.