Sunday, March 24, 2019
How concentration affects the rate of reaction between Hydrochloric Aci
How dumbness affects the rate of answer amid Hydrochloric back breaker and Sodium ThiosulphateChemistry CourseworkHow Concentration Affects a ReactionAimThe cipher of this experiment is to predominate off how concentration affectsthe rate of reaction between Hydrochloric caustic and SodiumThiosulphate.IntroductionThis experiment will be carried out by drawing a patsy on a objet dart ofpaper and mixing hydrochloric stinging and sodium thiosulphate together tosee if the cross disappears. The concentration of hydrochloric acidwould change every reaction to show that concentration effects areaction. The quantify in which the cross took to disappear would berecorded as soundly as the temperature at the start and end up of thereaction, the concentration of the hydrochloric acid and the amount ofhydrochloric acid and sodium thiosulphate dropd.Sodium Thiosulphate + Hydrochloric Acid ------------ Sodium Chloride+ Water + Sulphur Dioxide + SulphurNa2S2O3 + 2HCl 2NaCl + H2O + SO2 + S forward WorkThe problems that arose whilst doing the preliminary experiment wasthat the beakers and measuring cylinders were not cleaned out flopand some of the sodium thiosulphate turned cloudy were there waspreviously hydrochloric acid inside the beaker.The preliminary experiment showed that concentration effects the rateof reaction as well as the temperature does. The higher theconcentration of hydrochloric acid, the faster the reaction wasbecause the to a greater extent particles there were to collide and break old bondsand make bran-new bonds. Also if the temperature was higher the particleswould move around faster because they exhaust to a greater extent energy and would alsocause more effective collisions. GRAPH evenhandedly TestThe experiment will ... ... anomalies within the experiment and this may have been caused bythe stirring or the timer being started and stopped wrongly. I thinkthat our group had a good method because our results show ed what wewere trying to find out, which was to test how the change ofconcentration affects a reaction. To get rid of some(prenominal) anomalies we couldhave either not stir the mixture or use a machine to stir it at thesame speed separately time. I think that the procedure that we had used wasadequate to test and that it was somewhat reliable. In my predictionI had stated that as the concentration increases, the time taken for a10% decrease in light volume would decrease. This is because moreparticles would be in the higher concentration causing more effectivecollisions to happen. In future experiments we could increase therange of results as well as having more intermediate values.
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