An experiment to investigate the effect of changing the concentration E

An experiment to investigate the effect of changing the concentrationof hydrochloric acid on the lay of reaction with sodium thiosulpahte.AimI am trying to find out how the concentration of hydrochloric acidaffects the reaction time with sodium thiosulpahte.If a clear upshot of sodium thiosulphate is mixed with hydrochloricacid indeed a reaction will occur where a creamy-yellow precipitate ofsulphur is produced.H20Text package + Text Box + Text Box + Na2S203 2HCLText Box + 2NaCl SO2 SReactants ProductsThe sulphur takes a while to form and starts to turn the water cloudyafter a short time. You cannot tell when the reaction has stopped so across drawn on a piece of paper in pencil can be sued to do thisexperiment. The liquid is placed on top of the cross in a beaker andit is timed how long it takes for the cross to disappear when viewedthrough the liquid.This experiment can be used to investigate the effectuate ofconcentration and temperature on rove of reaction. This i s theexperiment I am going to do because I am trying to see how theconcentration of acid affects the rate of reaction.VariablesIn my investigation I could change* Concentration of sodium thiosulphate* Temperature of solution* Concentration of acid* Type of acid* Volume of thiosulphate* Volume of acidI am going to change the concentration of acid.I will keep all the other(a) variables the same. The independent variablewill change the dependant variable- the rate of reaction.PredictionI predict that the less concentrated the acid is then the long-range itwill take for the sodium thiosulphate to react.If you increase the temp, increase concentration, add a catalyst orthe solid reactant is crushed up into smaller bits then the rate ofreaction will always increase.Apparatus* Sodium thiosulphate* Hydrochloric acid* beat cylinder* Beaker* Paper* Pencil* Distilled water* Stop watch* Conical flaskSafetyGoggles should be worn to prevent any of the solution from going intothe eye.Everyone s hould behave sensibly to prevent accidents.Collision theoryThe rate of reaction depends on how often and how hard the reactingparticles collide with each other. The particles have to collide hardenough in order to react. The rate of reaction can be increase... ...2 and 3 only have a1second difference in time. These results atomic number 18 too close together andcannot be reliable.These results arent adequate for a firm conclusion as it has a fewanomalous results and on the average measure they dont have a largeenough gap between them e.g. 34 and 36. The experiment should becarried out more than times for a more holy result.The procedure used was suitable but produced quite unreliable resultsas the cross on the paper may have not fully disappeared when theother person was told to stop the timer as this is what we did. If theperson looking at the cross and observing when it disappeared changedthen the persons opinion on when it has disappeared may make it an away test so it woul d have to be kept the same person all thetime.If I did the experiment again I would probably take more timemeasuring out the solutions and it would probably be a better idea forthe person observing to see when the cross can no longer be seen tohave the stop watch so they can stop it at the exact time they can nolonger see it. It could likewise be improved if the experiment was carriedout more times as a better average could be produced.