Investigation looking At the Speed of Reactions :: GCSE Chemistry Coursework Investigation

Investigation looking At the Speed of ReactionsIntroductionThe aim of this taste is to find out how a variable can affectthe results from a scenario set up in scientific environment. Theexperiment is to see how a certain(p) variable allow for affect the amount ofGas produced from a Calcium carbonate and Hydrochloric Acid Reaction.The ScienceCalcium light speedate is a generally lily-white or colorless mineral that istranslucent. When compressed or exposed to great heat the mineralbinds together in small to large clumps forming calcium CarbonateChips, however left in its formed state it is powder, a chalk likesubstance. I could use either forms of the Calcium Carbonate for theexperiment.Hydrochloric Acid, is a clear, colourless to slightly yellow liquidwith a sharp, pungent and irritating odour. It is a strong soaringlycorrosive acid, soluble in water and alcohol only if insoluble inhydrocarbons.The reason I am using Calcium Carbonate and Hydrochloric Acid for myexperiment is d ue to the reaction when they are put together. Afizzing reaction takes place letting loose Calcium Chloride, CarbonDioxide and Water.Word Equation=============Calcium carbonate + Hydrochloric Acid === Calcium Chloride + Water +Carbon DioxideSymbol Equation===============CaCO3 + 2 HCl --- CaCl2 + H2O + CO2PredictionMy prognostic is that if the concentration of the acid increases therewill be an increase in output of Carbon Dioxide from the reaction forexample the highest concentration produce the most gas in the giventime. I used a preliminary test to overhaul in the prediction. I went andprepared marble chips and concentrated acid we tried the experiment,the results was clear that as in a few seconds it was almost finished.When we used precise dilute acid it took so long for it to react and theamount of bubbles were much less than the first one. By using theresults I can make the prediction of that, the rate of reaction isaffected by concentration.HypothesisIf the concentration of an acid increase than output of gas will alsoincrease. When the acid has a high concentration that means in that resolving, compared to a dilute one there are more particles availableto react with therefore the amount of times they will collide with theeach other is more.Factors-------There are many different factors, which effect the rate of reaction.Below is most of the known factors which effect the rate of areaction1. The size of the particles of a solid reactant2. The concentration of the reactants solution3. Temperature of experiment4. Amount of time available for reaction5. Amount of solid reactant6. Amount of reactant solutionParticle sizeThe reaction between calcium carbonate and dilute hydrochloric acid is