Rate of Reaction Coursework Essay -- GCSE Chemistry Coursework Investi

Investigate if changing the concentration of an virulent will change the eyeshade of the reaction when marble is dissolved in hydrochloric deadly.ApparatusMarble Chips cone-shaped FlaskHydrochloric AcidGas SyringeDeli very(prenominal) Tube look into WatchFair TestTo make the test a average test I will intent the same amount of deadlyfor each concentration. I will do this by utilize a capillary tubebeca design they are very accurate. I will subprogram 3g of marble in eachconcentration of astringent. I will sporting everything out before I start thenext taste with a different experiment.Safety======Magnesium is flamable and when it reacts with acid an exothermicreaction takes indue releasing a large amount of heat energy. Acidsare corosive so saftey glasses must be worn.MethodI will use Marble chips all of a small size. I open resolute to use 3gor marble chips. The amount of acid I contrive decided on is 20ml. I willmeasure this by using a burette, a very thin tube tha t lets out theacid when you turn the tap it gets very accurate amounts of acid. I fire measure the speed of the reaction by how much gas is given off. Ican measure this in cm3 in a gas syringe. When the experiment takesplace, I will take the reading every 10 imprimatur to get a good graph forthe results. If the reaction goes very quickly, I will take thereadings every five seconds. I will use acid of 0.5, 1, 1.5, 2 and 2.5molar concentrations. To be sure I can affirm on my results I willrepeat he experiment twice or three times if necessary, because thereis chance of inexact results for many reasons.Calcium hundredate + Hydrochloric acid Calcium Chloride + Water +Carbon DioxideCaCO3 + 2HCl CaCl2 + H2O + CO2Prediction==========I predict that if the concentration of the Hydrochloric a... ...would redeem been a lot similar. If I did use Powder however, theconcentration of acid may crap had to be weakened as the reactionwould have taken place a lot quicker due to the very large s urfacearea and readings wouldnt have been as accurate. Secondly, aninaccuracy may have been caused by the fact that the temperature mayhave dropped during the reaction. This could have been used if I useda water bath to heat up the acid to a constant temperature. You haveto allow for a margin of tender error during the experiment, somepeople react slower than others and you have to rely on the persontaking the readings with the stopwatch. The results were reliablebecause they were almost the same in both experiments, even thoughthere was an unreasonable result it happened in both experiments, so theresults were still relibale, I have no explination for the anomalousresult.