How the concentration of an acid affects the rate of reaction on marble chips :: GCSE Chemistry Coursework Investigation

How the concentration of an dosage affects the rate of reaction on marble chipsBackgroundThese different speeds of reaction be referred to as their rates. Therate of reaction depends on how often and how heavy(a) the reactingparticles collide with each other. Particles have to collide in orderto react, and the have to collide hard enough as well. This is calledthe collision theory.When the temperature is increased the particles all move quicker. Ifthey are moving quicker accordingly they are going to have more collisions.Reactions unless happen if the particles collide with enough energy. Ata higher temperature there impart be more particles colliding withenough energy to make the reaction happen. This sign energy isknown as the activation energy, and it is needed to break the initialbonds. If one of the reactants is a solid then breaking it up intosmaller pieces bequeath increase its surface area. This means theparticles around it in the event will have more area to work on sothere will be more useful collisions. A catalyst works by giving thereacting particles something to stick to where they can bump into eachother. This obviously increases the number of collisions too. If thesolution is made more concentrated it means that there are moreparticles of reactant knocking ab surface mingled with the water molecules,which makes collisions between the important particles more likely.Chemists overseeing orotund reactions in industrial situations mustcarefully consider the rates of reactions. For some reactions, such asthe production of a final material, fast reactions will be desirableto increase production and therefore sales profit. For otherreactions, such as the degradation of a material, reducing the ratemay be skilful to increase the lifetime of a product.Times Education Series Chemistry GCSEPlanI will investigate how the concentration affects the rate of reactionbetween hydrochloric acid and calcium carbonate (marble chips). Therate of reaction c an be measured by measuring the amount of gasproduced after a indisputable amount of time.The reaction will withstand place in the conical flask from where the gasproduced will travel into the up-turned measuring cylinder. The gaswill then displace the water in the tube. I will measure out exactly50ml of 1molar hydrochloric acid into the conical flask. I will thenweigh out exactly or as close as possible to 2 grams of small sizedmarble chips. I will put the chips into the flask with the acid andimmediately place the bung over it so as to lose as little gas aspossible. I will then take readings at intervals of fifteen seconds.