Rate of Reaction Experiment - Sodium Thiosulphate and Hydrochloric Acid :: GCSE Chemistry Coursework Investigation

Rate of Reaction Experiment - atomic number 11 Thiosulphate and Hydrochloric supermanTo investigate the effect, of changing the concentration of areactant, in a chemical reply on it rate.The equation used for the examine wasSodium + Hydrochloric south + Sulphur + Sodium + waterThiosulphate acid dioxide chloride Na2S2O3 + 2HCl(aq) S(s) + SO(g) + NaCL(aq) + H2OThe Collision conjecture can explain reaction rates perfectly. A chemicalreaction can only occur between particle when they hit or collide at aminimal amount of muscularity rent for them to react this is called theactivation energy.The rates of a reaction depends on how steadfastly and often the reactingparticles collide. Basically, particles have to collide in order to react1) They must(prenominal) also collide hard enough to give a reaction.2) compress can also affect reaction rates between gases, an maturation in pressure pushes the molecules closer together making them collide more often, which in turn incr eases the reaction rate.3) A presence of a throttle could affect the result, as it is a substance that alters the rate of the reaction. without itself appearing in the final result. When a solution becomes more concentrated it means there are moreparticles of reactant knocking between the water molecules, this meanscollisions between important particles more likely.In a gas, increasing the pressure means the molecules are moresquashed together, there will then be lots more collisions.Higher temperature also increases the energy of the collisions, itmakes particles move faster. sudden collisions can only b caused byincreasing the temperature. enzymeThis is shown in the drawopposite.The Maxwell-Boltzmann Distribution and activation energyFor a reaction to take steer particles have got to collide withenergies greater than or equal to the activation energy for thereaction, this can be marked on Maxwell-Boltzmann Distribution.I have chosen to investigate the effect concentrati on has on areaction. I chose this because it is the easier to situate and willprovide the most veracious set of results.Equipment---------Hydrochloric acid (5cm3)Sodium thiosulphatePaper with black cross onConical flasksGoggles weeweePipetteMeasuring cylinderMethodTo provide fair accurate results it is important to ensure that thesame printed cross is used for each experiment. In this the experimentthe amount of Sodium Thiosulphate is varied each time in comparison tothe amount of water used, the solution will always sum up up to 45cm3.There will always be 5cm3 of hydrochloric acid used. The experimentwas performed at room temperature as this made the experiment easy toperform, as no heating or cooling devises were necessary.