An investigation of the affect of the concentration an of the rate of :: GCSE Chemistry Coursework Investigation

An investigation of the affect of the concentration an of the rate ofreaction.Introduction.We are trying to find out the affect of pungent concentration on the rateof reaction, we are using 2, 1.5, 1, 0.5, 0.25 Molar acid. In ourexperiment, we are reacting it with sodium thiosulphate. The collision surmisal will be involved in this, for instance the more concentratedthe acid we use, the faster the reaction will occur and the lower theconcentration the slower the reaction will occur, this is because thecollision theory says that if something is more concentrated then itwill collide more because there will be more of the substance. Wecould use a catalyst to speed up the reaction, this allows themolecules to move around easier to help them to collide more to speedup the reaction for instance say that battalion are trying to get oerwall it is possible but it will take a slow process and say that weadd a catalyst, our catalyst is a ladder this enables the people(molecules) to get over t he wall quicker and easier than they normallywould. In this experiment we need to control the amount of acid,amount of water, chemicalswater temperature amount of sodiumthiosulphate and to all have got when the x is gone on the paper. We needto be safe when doing this by wearing goggles and making sure that wedispose of the end result chemical in a large beaker in the fumecupboard and not down the sink, we also need to make sure we do not angle of dip over the conical flask when we perform the experiment because thechemical fumes are pungent and are not good to breath in.Method.We are tone ending to measure the rate of reaction by how fast or slowly themix of chemicals and water goes cloudy by placing a piece of paperwith a cross on it underneath the conical flask and all agreeing whenit has disappeared from sight.In this experiment we will need to use the followingEquipment UseStop measureTo time the experimentConical flaskTo collect all the chemicals together inBuretteTo meas ure accurately all the chemical and watersodium thiosulphateChemical utilise in this experimentHydrochloric acidChemical used in this experiment, we will use 2, 1.5, 1, 0.5 and 0.25molar strengthsWaterUsed in this experiment, used in dilutionsPaperUsed along with cross of colour to determine when mixture is cloudyenoughBeakersUsed to hold the chemicals and waterDilutionsTo obtain the polar strengths of hydrochloric acid we will need todilute 2 molar acids and dilute it with water to reach the appropriate