Rate of Reaction Coursework Essay -- GCSE Chemistry Coursework Investi

Investigate if changing the stringency of an acid pass on transfigure the rate of the reply when marble is dissolved in hydrochloric acid.Apparatusmarble ChipsConical FlaskHydrochloric AcidGas SyringeDeli truly subwayStop WatchFair TestTo make the audition a fair test I bequeath use the same summate of acidfor each preoccupation. I ordain do this by utilize a capillary tubebecause they are very accurate. I pull up stakes use 3g of marble in eachconcentration of acid. I will clean everything bulge out before I start thenext experiment with a different experiment.Safety======Magnesium is flamable and when it reacts with acid an exothermic reply takes place 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 pass on decided to use 3gor marble chips. The amount of acid I have a bun in the oven decided on is 20ml. I willmeasure this by using a burette, a very thin tube that lets out theacid when you turn the tap it gets very accurate amounts of acid. I backside measure the speed of the reaction by how much shoot a line is habituated off. Ican measure this in cm3 in a gas syringe. When the experiment takesplace, I will take the reading every 10 second to get a good graph forthe cases. 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 rely on my results I willrepeat he experiment twice or three times if necessary, because thereis opportunity of inaccurate results for many reasons.Calcium Carbonate + Hydrochloric acid Calcium Chloride + body of water +Carbon DioxideCaCO3 + 2HCl CaCl2 + H2O + CO2Prediction==========I predict that if the concentration of the Hydrochloric a... ...would have been a lot similar. If I did use Powder however, theconcentration of acid may have had to be weakened as the reactionwould have taken place a lot quicker payable t o the very large surfacearea and readings wouldnt have been as accurate. Secondly, aninaccuracy may have been ca apply 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 bound of human 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 anomalous result it happened in both experiments, so theresults were still relibale, I have no explination for the anomalousresult.