Rates of Reaction :: GCSE Chemistry Coursework Investigation

How does temperature run into the rate of reaction between sodium thiosulphate and hydrochloric acid?Temperature and Rate of Reaction school principalHow does temperature affect the rate of reaction between sodiumthiosulphate and hydrochloric acid?sodium thiosulphate + hydrochloric acid sodium chloride +water +sulphur dioxide + sulphurNa2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + H2O(l) + SO2(aq) + S(s)PredictionI phone that the higher the temperature, the more quickly reaction bequeath occur. This is because with heat, the particles of sodiumthiosulphate and hydrochloric acid have more energy. This causes themto move around more. It works like this for all substances, non justthose two. Chemical reactions require collisions, and if particles are locomote around more quickly they are obviously more likely to collide.It is just like in a crowded street. If the people are moving quicklyit is more likely that they will bump into each other then if they aremoving slowly. It is in this way that particles of solutions react.I found out from preliminary research that the particle theoryexplains that chemical reactions require a collision between theparticles of the reactants, at a certain velocity and angle. If thisangle or velocity is not achieved, the substances will not reacttogether. I also found out that the factors that affect the rate of areaction are the surface area of the solid reactant (if there is asolid reactant), the concentration of the aqueous reactant(s), thepresence of catalysts and temperature. In this essay we are onlyinterested in temperature. Where temperature is not high enough toprovide energy for the particles to move at a high enough speed, theparticles will just not react, or rather, not as many particles willbe able to react together in a certain sum of time.At 0-10C, I predict that the reaction will take a very long time toreact. The reason I say this is because although the particles will bemoving around, they will not be moving at a high eno ugh velocity. Forchemical reactions to occur, the particles must be travelling at aparticular speed, and this requires energy. At this temperature I donot think that it will give the particles enough energy to convertinto movement.Between 11-40C (this includes 3 temperature intervals - 11-20C,21-30C and 31-40C), I predict that the reaction will occur morequickly than that of 0-10C. I think the reaction rate will decreasedramatically at this temperature. I predict this because there is moreheat to provide energy to the particles of the reactants. This energycauses the particles (of sodium thiosulphate and hydrochloric acid) to