Investigating the Kinetics of the reaction between Iodide ions and Pero

PLANNINGInvestigating the kinetics of the chemical reply between Iodide ions and Peroxodisulphate (VI) ionsBy the use of an single clock reaction I hope to obtain the length of time taken for Iodine ions (in potassium iodide) to react fully with Peroxodisulphate ions (in potassium Peroxodisulphate). I will do three sets of experiments changing first the concentration of iodide ions, then the concentration of Peroxodisulphate ions and lastly the temperature of the solution in which the reaction is taking place. From these results, I hope to baffle conclusions as to the gear ups of these changes to the environment of the reaction on the commit and likewise determine the differentiate of the reaction and the activation enthalpy.Background informationThe measure of a reaction is determined by a number of factors. These imply pressure, temperature, concentration of reactants, surface ara of reactants, presence of a catalyst and radiation.The effect of these factors can be exp lained using collision theory. Reactions occur when the reactant particles collide, provided the colliding particles have decent cleverness for the reaction to take place. As the molecules approach their electron clouds repel. This requires energy the minimum amount of which is called the activation enthalpy - and comes from translational, vibrational, and rotational energy of apiece molecule. If there is enough energy available, this repulsion is overcome and the molecules get bordering enough for attractions between the molecules to cause a rearrangement of bonds and accordingly an effective reaction has taken place. The more than collisions of particles with kinetic energy over the activation enthalpy that occur, the faster the overall reaction. During this investigation I am focusing on the effect of temperature and concentration while aiming to maintain other rate ascertain factors at a constant level in order to see to it reliable results.Effect of concentration Takin g the collision theory into aim the effect of concentration is simple in that the more particles of the reactants there are in the same area of space the more likely the collisions and therefore the faster the overall reaction. The following equation has been determined through experiment showing that the rate of a reaction depends on concentration of reactants ARate AnWhere n is a constant called the order of the reaction. T... ... designate the temperatures of all(prenominal) experiment and take into consideration how this may affect the results. Also, it is important to record the start and end tempertaure of the solution during the temperature-focused experiments because higher temperature lose their heat more quickly and if the temperature drops during the time of the reactions this information has to be involved in purpose the average temperature.PredicationsI portend that the higher the concentration of the reactants the higher the rate of the reaction.I predict that th e higher the temperature of the reactants the higher the rate of the reaction. I predict that the order of the reaction with respect to I- ions will be 1 and the order of the reaction with repect to S2O82-ions will also be 1 giving a overall order for the reaction of 2. This is information obtained from data books and backed up by information from the internet. (see references)I predict that the activation energy of the reaction will be 52.9 kJ mol-1. This information is taken from the ILPAC Resource Pack for march on Practical Chemistry and is for the uncatalysed reaction between iodide ions and peroxodisulphate ions.