Rate of Reaction Coursework Essay -- GCSE Chemistry Coursework Investi

Rates of ReactionA chemic reaction can only occur amid particleswhen they collide (hit each other).Particles whitethorn be atoms, ions or molecules. in that location is a minimum amount of musclewhich colliding particles need in order to react with each other.If the colliding particles have less(prenominal) than this minimum energythen they just bounce off each other and no reaction occurs.This minimum energy is called the activation energy.The fleet the particles are going, the more than energy they have.Fast moving particles are more likely to react when they collide.You can make particles move more cursorily by heating them up(raising the temperature).Changing the Rate of a Reaction.There are 5 ways to increase the regulate of a chemical reaction.They are all understood in terms of collision theory.The rate of a chemical reaction may be increased by1) Raising the temperature.2) Increasing the concentration (in result).3) Increasing the pressure (in gases).4) Increasing the uprise area of a solid.5) Use a catalyst.Measuring the Rate.The reaction between sodium thiosulphate solutionand dilute hydrochloric acid.HCl + sodium thiosulphatecursorsodium chloride + sulphur dioxide +sulphur + water.HCl(aq) + Na2S2O3(aq) arrow NaCl(aq) + SO2(g) + S(s) + H2O(l)The solid sulphur (S(s)) formed in this reactionmakes the colorless solution go cloudy.The reaction is usually carried out in a flaskfulplaced on a piece of white paper which has a ...