The relationship between the concentration of Sodium Thiosulphate and the reaction rate with Hydrochloric acid :: GCSE Chemistry Coursework Investigation

The kinship between the denseness of atomic number 11 Thiosulphate and the reaction rate with Hydrochloric acid launchingThe rate of reaction is measured by finding the quantity of harvest-festivalmade in a certain time. The rate of reaction thunder mug be made faster by anincrease of temperature, adding a catalyst, change magnitude concentrationor pressure or making the reactants surface champaign larger. An increasein temperature causes the particles of the reactants to gain to a greater extent thanenergy and move faster. contact theory states that this results inmore collisions and more of these collisions ordain have full energyto cause a reaction. By adding a catalyst the particles will stick tothe sides of the catalyst and this increases the rate of reaction. Byincreasing the surface range in that location is more surface for the particles tocollide with thus causing more collisions and increasing the rate ofreaction. Finally by increasing concentration there be m ore particlesmoving around in the same space. This equals more reactions, whichequals faster rate of reaction.More collisions = faster rate of reaction.In this experimentation I shall be investigating the relationship betweenthe concentration of atomic number 11 thiosulphate and the rate of its reactionwith Hydrochloric acid. The formula for this reaction isHydrochloric acid + Sodium thiosulphate Sodium chloride +Sulphur oxide + Sulphur + water2HCL(aq)+Na2S2O3(aq)NaCl(aq)+SO 2(g)+S(s)+H2O(l)The reaction is considered to be everyplace when sufficient overcast isbuilt up in the reaction flask. This cloudiness is sulphurprecipitated from the reactants. This therefore is a precipitationreaction. We are investigating the matter of varying the concentrationof Sodium Thiosulphate and not the other variables that can walk outrates because We do not know the right catalyst for this reaction, weare not able to break the reactants down to increase their surface part and we decided not to do temperature because we felt that themost dramatic results would catch from concentration. To make this testfair all of these other variables have to stay the same.Hypothesis----------I believe that the little concentrated the Sodium Thiosulphate the lazy the rate of reaction will be. I say this because the less theconcentration the less the amount of particles in the same volume andtherefore the less collisions. This means that the rate of reactionwill be slower.Plan----To maintain our results we will be using the following equipmentConical flask (To checker the liquids whilst the reaction is takingplace.)Pipette (To move reactants and measure out skillful amounts.)Goggles (As we are using acid our eyes must be shielded from harmfulmaterials)Apron (To protect the clothes and body.Stopwatch (To numbering the time taken for the reaction to take place.