Rates of reaction:- sodium thiosulphate + hydrochloric acid :: GCSE Chemistry Coursework Investigation

Rates of reception- sodium thiosulphate + hydrochloric vitriolicicPlan-We must produce a piece of coursework investigating the evaluate ofrespondion, and the effect that changing ace particular variable has onthe response time. The rate of reaction is the time it takes one ormore of the reactants to react or the time it takes to produce a newproduct from a chemical reaction. To work out the reaction time we usethe formula.1 divided by time taken for reactionThere ar five factors which affect the rate of a reaction, accordingto the collision surmise of reacting particles1. temperature of solution,2. closeness of solution,3. pressure of gases in reaction,4. surface area of reactants,5. Catalysts.For my preliminary experiments I tolerate chosen to investigate the effecttemperature and concentration have on a reaction. I have chosen toinvestigate these reactants because the are the some practical for thelab and equipment that I have available to use overly it would take tomuc h time to prepare a solid in powdered and unpowdered form, and itis difficult to get accurate readings due to the inevitabilities ofhuman errors, and as gas is mostly colourless it is difficult to gaugea reaction changing the pressure, and if a substance is added to givethe gas colour, it may tempt the outcome of the experiment.Similarly the use of a catalyst complicates things, and if used wrong could alter the outcome of the experiment.My preliminary experiments showed me that it would me more practicaland time deliverance if I just altered the temperature of the solution aschanging the concentration of the solution was very time consuming.However the preliminary experiments also helped me to require asuitable strength of solution.Aim-To see the effects of a change in temperature on the rate of areaction. The reaction that lead be used isSodium Thiosulphate + Hydrochloric Acid.Na2S2O3 (aq) + 2HCl (aq) .As I persistent after(prenominal) my preliminary experiments I will only carry outone experiment, temperature change whilst all other variables stayconstant. As both, sodium thiosulphate and hydrochloric acid aresoluble in water it means that I would be able to alter theconcentration of either of them. However I have chosen to vary thesodium thiosulphate as it is available in big amounts. To alter thetemperature of the solution a water bath will be used to heat up theacid, thiosulphate and water to the necessary temperature.I decided on my range temperatures and the concentration that I woulduse during my preliminary serial of experiments -I would be using a concentration of 0.