Investigation into how to measure the rate of a chemical reaction and :: GCSE Chemistry Coursework Investigation

Investigation into how to gradation the rate of a chemic reaction and how to change the rate of a reaction.Investigation into how to measure the rate of a chemicalreaction and how to change the rate of a reactionMy task is to produce a piece of coursework investigating rates ofreaction, and the offspring different changes have on them. The rate ofreaction is the rate of the loss of a reactant or the rate offormation of a product during a chemical reaction. There are fivefactors which affect the rate of reaction according to the collisiontheory of reacting particles temperature, concentration (ofsolution), pressure (in gases), surface area (of solid reactants) andcatalysts. I have chosen to investigate the effect of temperature andconcentration on a reaction. This is because it is the most practicalto investigate.I am investigating the chemical reaction of 2 substances. Thesubstances being Sodium thiosulphate and Hydrochloric paneling.As a word equation this isNaSO + 2HCl ------- --------- 2NaCl + HO + SO + Ssodium + hydrochloric ------------- sodium + water + sulphur +sulphurthiosulphate acid chloride dioxideWhen these two solutions are mixed together, the mixture graduallygoes cloudy, because sulphur is made. I am going to carry out theexperiment of changing the temperature (whilst everything else remainsconstant). My showtime temperature will be room temperature because ittends to be constant and it is more practical and will not need to bemonitored. When the temperature is varied a water clean will be used toheat up the acid and thiosulphate to the necessary temperature.PredictionAccording to the kinetic theory all matter 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 stipulation temperature.This theory defines the difference between solids, liquids and gasesin a gas the particles move freely and a t random in all the spaceavailable. In solids, particles moreover vibrate around fixed positionsand in liquids the particles have some freedom and contribute move aroundeach other. Using the kinetic theory we can explain changes in stateof substances as they are heated and cooled. The kinetic theory canmost importantly be used to explain the factors alter rate ofreaction, this is called the Collision theory. The collision theoryexplains that chemical reactions occur when particles of the reactantscollide. Molecules obey Newtons Laws of motion. They undergo elasticcollisions with other molecules and the walls, but otherwise exert noforces on each other.