Rate of Reaction Coursework Essay -- GCSE Chemistry Coursework Investi

Investigate if changing the concentration of an venereal infection will depart the rate of the reaction when marble is dissolved in hydrochloric astringent.ApparatusMarble ChipsConical FlaskHydrochloric AcidGas SyringeDelivery Tube apprehend WatchFair TestTo make the experiment a fair test I will use the same amount of acidfor apiece concentration. I will do this by using a capillary tubebecause they are very accurate. I will use 3g of marble in eachconcentration of acid. I will clean everything egress before I start thenext experiment with a different experiment.Safety======atomic number 12 is flamable and when it reacts with acid an exothermicreaction takes place releasing a large amount of heat energy. Acidsare corosive so saftey glasses must be worn. regularityI will use Marble chips all of a small size. I have decided to use 3gor marble chips. The amount of acid I have 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 stays very accurate amounts of acid. Ican 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 second 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 rely on my results I willrepeat he experiment twice or triplet times if necessary, because thereis chance of inaccurate results for many reasons.Calcium Carbonate + Hydrochloric acid Calcium Chloride + 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 whitethorn have had to be weakened as the reactionwould have taken place a lot quicker due to the very large surfacearea and readings would nt 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 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.