Rates of Reaction :: GCSE Chemistry Coursework Investigation

The tramp of reply is a measure of how fast something happens. We can pick up the rate of response by measuring the change that happens in a set period of time. institution------------The rate of answer is a measure of how fast something happens. Wecan find the rate of reception by measuring the change that happens ina set period of time. Many factors can affect the rate of reactionthe absorption of the reactants is one of them. In the followingexperiments we will investigate how the concentration of the reactantsaffect the rate of reaction. To do this we will use the reaction among magnesium and hydrochloric dit. GRAPHI will measure the rate of reaction by timing how long the reactiontakes.Aim- I am toilsome to find out how an increase/decrease in concentrationof the acid affects the rate of reaction in magnesium strips.PredictionI portend that as the concentration of hydrochloric acid increases thetime taken for the magnesium to mellow out will decrease. I also thinkthat when the concentration of the acid duplicate the rate of reactionwill also double.Collision TheoryThe contact theory is how the rate of reaction increases when theconcentration of hydrochloric acid increases.In the reaction firstly all of the particles in the reactingsubstances must collide. They must collide with a certain amount of vigor called activation energy, this must be reached for the reactionto take distance. If the particles do not reach this infallible amount ofenergy there will not be any successful collisions and thence thereaction will not take place. If the particles do reach the requiredamount of energy a reaction will rake place and as the number ofcollisions increase the reaction speeds up.The more concentrated the reactants the large the number ofsuccessful collisions between the particles. This explains why thelargest rate of reaction is usually as soon as the reactants have beenmixed together, this means they atomic numbe r 18 both at their highestconcentrations.High concentration Low concentration(18cm HCL + 2cm HO) (6cm HCL + 14cm HO)The temperature in this investigation will not affect the rate ofreaction because throughout the investigation it will stay at boardtemperature. If the temperature was to change during the experiment itwould effect the rate of reaction by fastness it up if the temperatureincreased because the particles move a lot faster and blend a larger