Investigation: How does the concentration of acid affect the rate of reaction? :: GCSE Chemistry Coursework Investigation

Investigation How does the concentration of acid affect the set up of reaction?The aim of this investigation is to test how concentration affects therate of reaction.My prediction for my investigation is that the higher theconcentration, the faster the reaction will be.My reason behind my prediction is The higher the concentration, the more particles there are whichwill collide with enough verve to overcome activation energy, whichis explained as the impact theory.Collision theory explains how chemical reactions occur and why ratesof reaction differ. For a reaction to occur, particles must collide.If the hit precedents a chemical change it is referred to as afruitful collision. For a reaction to occur, the reactant particlesmust collide. Only a certain fraction of the total collisions ca habitchemical change these are called successful collisions. Thesuccessful collisions have activation energy at the moment of impactto break existing bonds and form untried bonds, resulting in the productsof the reaction. Increasing the concentration of the reactants andraising the temperature bring about more collisions and therefore moresuccessful collisions, increasing the rate of reaction.When a catalyst undergoes collision with the reactant molecules, lessenergy is required for the chemical change to take place, and hencemore collisions have sufficient energy for reaction to occur,therefore the reaction rate increases.The four factors that influence the rate of reaction and therefore the try are1. The temperature. This is because if the concentration is warmer, then the reaction rate may increase or shine depending on temperature.2. The Catalyst. This is because if the catalyst is of a larger volume or size than the concentration then it may have an affect on the concentration and experiment that will differentiate results.3. The concentration. This is a variable that will be used because we are trying to find if the concentration will affect the rate of reaction.4. The get hold area. This is because if the grow areas of the calcium carbonate pieces are different then it will affect the results also because it will give off more gas, the greater the surface area.To achieve the most accurate of results possible I will use allsufficient equipment and data.For my prediction, that the higher the concentration, the faster thereaction rate, I will use pre-test results to help with my evaluationbefore I start my investigation.Before I started my investigation, I did a pre-test experiment thathelped me to reach my prediction.