The Effect of Temperature on the Rate of Reaction :: GCSE Chemistry Coursework Investigation

The Effect of Temperature on the Rate of ReactionPlanWe must produce a piece of coursework investigating the rates ofreaction, and the effect different changes have on them. The rate ofreaction is the rate of loss of a reactant or the rate of organisation ofa product during a chemical reaction. There argon five factors whichaffect the rate of a reaction, according to the collision theory ofreacting particles temperature, concentration (of solution), public press(in gases), surface are (of solid reactants), and catalysts.I allow for investigate the effect temperature has on a reaction.AimTo investigate how a change in temperature effects the rate of achemical reaction.The reaction that will be used isSodium Thiosulphate + Hydrochloric Acid -- Na2S2O3(aq)+ 2HCl(aq)Sodium Chloride + Water + Sulphur Dioxide + 2NaCl (aq)+ H2O(l)+ SO2(g)+ Sulphur-S (s)PredictionI annunciate that as the temperature is increased the rate of reactionwill increase. This means that the graph drawn up in my analysis willhave positive correlation, and will probably be curved as the increasein rate of reaction will not be exactly the same as the temperature isincreased. This discharge be justified by relating to the collision theory.When the temperature is increased the particles will have more(prenominal) energyand thus move hot. Therefore they will collide more often and withmore energy. Particles with more energy are more likely to overcomethe activation energy barrier to reaction and thus react successfully.If solutions of reacting particles are made more concentrated thereare more particles per unit volume. Collisions between reactingparticles are therefore more likely to occur. All this can beunderstood better with full understanding of the collision theoryitselfFor a reaction to occur particles have to collide with each other.Only a abject percent result in a reaction. This is due to the energybarrier to overcome. Only particles with enough energy to overcome thebarrier will react after(prenominal) colliding. The minimum energy that a particlemust have to overcome the barrier is called the activation energy. Thesize of this activation energy is different for different reactions.If the frequency of collisions is increased the rate of reaction willincrease. However the percent of successful collisions remains thesame. An increase in the frequency of collisions can be achieved by change magnitude the temperature, concentration, pressure, and surface area.Also I predict that if the temperature is doubled, then the time takenfor would be more than half because not only would the particles bemoving faster to create more collisions, but they would also have moreenergy so there would be more successful collisions