The aim of the experiment is to find out the effect of different :: GCSE Chemistry Coursework Investigation

The aim of the experiment is to find out the effect of opposite parsimoniousnesss of reactants on rate of reaction.Rates of ReactionAimThe aim of the experiment is to find out the effect of differentconcentrations of reactants on rate of reaction. I forget find this outby doing an experiment. The reaction that will be used is SodiumThiosulphate + Hydrochloric AcidNa2S2O3 + 2HClEquipmentThe equipment I will use to do this experiment is look footrace tubes Beakers Hydrochloric Acid Sodium Thiosulphate Water X pronounced paperBackground InformationThe Collision Theory is when particles collide with enough energy to calve their bonds if they are to react. Collision means when twoparticles hit each other. Breaking a solid exposes new surfaces, thesm anyer the pieces the greater the surface area.Safety Mea incontestablesA pair of goggles will be worn in order to protect the eyes.Fair TestIn order for my findings to be valid the experiment must be fair. Iwill use the same standard each measure for judging when the X hasdisappeared. I will make sure that the measuring cylinders for theHydrochloric acid and Sodium Thiosulphate will not be mixed up. Theamount of Hydrochloric acid will be 10cm3 each time.PredictionI bode that by increasing the concentration of one of the reactantsthe rate of reaction will increase because they are likely to collidequicker.MethodI first of all start of by wearing goggles as Hydrochloric Acid is anirritant to the eyes. After that I got all equipment out I needed toperform this experiment.Test Tube Beaker X marked paperI firstly put 10cm3 of hydrochloric acid into the beaker which Imeasured with the test tube. After I put the x marked paper under thebeaker. I then poured in the volume of Sodium Thiosulphate and theconcentration of it which was 50cm3. Set off the stopwatch and waitedto see when the x marked paper is not visible. I repeatedly did this 3times for each one. Finally, I recorded the results on a resultstable.ConclusionsMy r esults show that if you add more concentration of sodiumThiosulphate and less water to the hydrochloric acid the particlescollide more because so the rate of reaction increases. When Irepeated my results and experiment the times were similar content thatI was very accurate with my experiment and judgement.EvaluationI only really encountered one problem which was do the experiment inthe amount of time that was given to us and Sodium Thiosulphate ranout during the experiment but that was quickly resolved as borrowedsome of my friend who is also doing the experiment.