An experiment to investigate whether concentration of acid has an :: GCSE Chemistry Coursework Investigation

An experiment to investigate whether concentration of irate has an publication on the reaction point of the reaction between atomic number 20 repositionand Hydrochloric Acid.1. The key gene I plan to investigate and what I go forth do to make myexperiment a fair testThe factor that I plan to investigate is whether the concentration ofacid (the acid world HCl) has any effect on the rate of reactionbetween Calcium carbonate and Hydrochloric acid. I leave vary theconcentration and calculate rate of reaction, and calculate the effectof the factor by measuring the amount of brag given of during thereaction, and finding break how much gas is given of each 15 seconds. I allow request the gas by spumy it into a gas collection subway system in awater system bath.I leave alone use five contrastive concentrations 80%, 70%, 60%, 50%, and 40%acid. I impart mix acid with water to get the desired concentration, andfor each experiment I will keep the volume of the acid and watercomb ined at 50 ml. For example in order to 80% concentration I willmix 40 ml of acid, and 10 ml of water. For each differentconcentration I will conduct 3 identical experiments, and collect myresults every 15 seconds. I will then average out the three differentresults for champion particular time and produce one result. I will collect8 results per an experiment. I will fictionalize any mea trustworthyments that dontappear to follow the general trend.Also to make sure that results are accurate I will use a coulomb mlmeasuring tube with marking for every 1 cm3. I will measure the liquidin a test tube with 1 cm3 marking.I will conduct my experiment in the laboratory. The compare for thisexperiment isCaCo3 + 2HCL CaCL2 + H2O + CO2The variables I plan to control1. pop out area The resurrect area of each marble chip should be keptrelatively the same because due to impact theory if more than surfacearea is available the number of particles of solid reactant availablefor collision will increase. Therefore more collisions can occur, andit is likely there will be more collisions with sufficient energy tosuccessfully lead to a reaction. I might not be able to keep thesurface area of my marble chips exactly the same but I will attempt tokeep it as similar as possible.2.Volume of liquid I will keep the amount of liquid at 50 ml, becauseif I dont keep the amount of liquid constant I will change the amountof acid in contact with the marble chips, because if there is more HCL