The higher the temperature of the sodium thiosulphate the faster the :: GCSE Chemistry Coursework Investigation

The higher the temperature of the sodium thiosulphate the faster the reaction of the two liquids.Information.According to the energizing possibleness all topic is made up of tiny,invisible particles that move all the time. When the temperature isincreased around or on these particles, the faster they move. Heavierparticles move more slowly than light ones at a given temperature.This scheme defines the differences between solids liquids and gassesin a gas the particles move freely and at random in all the spaceavailable, in solids particles only vibrate around fixed positions andin liquids the particles hasten some freedom and can move around eachother. Using the kinetic theory we can explain changes in the state ofsubstances as they are heated and cooled. We can also explaindissolving and diffusion using the kinetic theory. The kinetic theorysays that gases diffuse to fill up the space around them. Thisexplains how the smell of cooking can be smelt all over the house by and by a short period of time. Its not only gases that diffuse,diffusion occurs in liquids too. Diffusion involves the movement ofparticles from a piece of higher niggardness towards a region oflower concentration. The kinetic theory can be used to explain thefactors affecting the rates of reaction, this is an extension to thekinetic theory called the collision theory. The collision theory saysthat Chemical reactions occur when particles of the reactants jar.They must collide with a certain minimum energy, called the activationenergy.To summarise, the requirements for an effective collision (for achemical reaction to occur) The reactants must collide with eachother, The molecules must have sufficient energy to initiate thereaction (called activation energy).PlanningThis experiment is to discover what affects rate of reaction. In thisexperiment thither are two solutions used, Sodium Thiosulphate andHydrochloric Acid.(Sodium Thiosulphate + Hydrochloric Acid) (Na2S2O3 (aq) + 2HCl (aq)In this reaction, a fine precipitate of sulphur slowly forms, tomeasure the rate of reaction, we time how long it takes to form theprecipitate. pentad of the most common ways to influence the rate ofreaction can be explained using collision theory. They are changingthe nature of the reactants, changing the concentration of one or moreof the reactants, changing the temperature at which a reaction isperformed, changing the surface area of a solid reactant, adding acatalyst.I have chosen to study how the rate of reaction changes when thetemperature of the sodium thiosulphate is varied.Before we could conduct the experiment there was some preliminary workto be done. This was to find expose what amount of each liquid would be