How the change of Hydrochloric Acid concentration affects the rate of reaction with Marble Chips :: GCSE Chemistry Coursework Investigation

How the c areen of Hydrochloric Acid concentration affects the arrange of reply with Marble ChipsAimTo hear if changing the concentration of an acid will increase or decrease the order of the reaction when marble is dissolved inhydrochloric acid. With the equation CaCO3 + 2HCl CaCl2 + body of water system + CO2.The rate of the reaction affects how quickly the CO2 is produced.Background Knowledge====================The rate of reaction depends on how often and how hard the reactingparticles collide with each other. Particles puddle to collide in orderto react, and the have to collide hard abounding as well. This is calledthe collision theory. When the temperature is increased the particlesall move fast. If they are despicable quicker then they are going tohave more collisions. high temperature also increases the energy ofthe collisions, because it take a craps all the particles move prompt.Increasing the temperature only causes faster collisions. Reactionsonly happen if th e particles collide with enough energy. At a higher(prenominal)temperature there will be more particles colliding with enough energyto make the reaction happen. This initial energy is known as theactivation energy, and it is necessary to break the initial bonds. If oneof the reactants is a solid then open frame it up into smaller pieceswill increase its surface area. This means the particles close to it inthe solution will have more area to fix on so there will be more efficacious collisions. If the solution is made more concentrated it meansthat there are more particles of reactant moving ab turn out between thewater molecules which makes collisions between the burning(prenominal) particlesmore likely. Because of this I expect the reaction rate to be quickerwhen the concentration of the acid is higher. The reaction shouldhowever, end on the same issue forth of gas given off. Rate is measured bythe disappearance of reactants and/or the appearance of a product.PredictionWhen th e concentration of acid increases the rate of reaction willincrease. I will be able to see the rate of reaction is increasing asthe gas is produced more quickly.Equipment=========Clamp tolerateHydrochloric AcidMedium Marble ChipsMeasuring Cylinder (100ml) x 2 (clearly mark each for water or acid)250 ml conical flaskBalanceGas SyringeSafety Equipment i.e. Lab coat, goggles change state TubesStopclockDelivery TubeThermometerMethod======* NB before each experiment, chink that the air temperature is consistent.* Using the measuring cylinder specific for the acid, measure out the specified amount of hydrochloric acid. Then, measure out the specified amount of water in the other measuring cylinder. Pour both of these liquids into a boiling tube.