Exploring Factors That Affect the Rate of a Chemical Reaction Involving Magnesium and Hydrochloric Acid

1535 WordsJul 8, 20187 Pages
What factors affect the rate of this chemical reaction: Magnesium + Hydrochloric Acid  Magnesium Chloride + Hydrogen Mg (s) + 2HCl (aq)  MgCl2 (aq) + H2 (g) Prediction I think that my results will show that the hydrochloric acid with a molarity of 2 will finish reacting the quickest because it is the strongest hydrochloric acid and I predict that the slowest experiment to finish reacting will be the 0.4 molar strength of hydrochloric acid. I think that the results will go slower and slower the nearer they are to the 0.4 strength of hydrochloric acid. The reason that the experiment with hydrochloric acid at 2 molar will dissolve the magnesium ribbon faster is because it is of a stronger concentration and so the molecules in…show more content…
The things that are going to be kept the same are the amount of hydrochloric acid and water, there will always be 50ml no matter what the concentration, The length of the magnesium ribbon will not change either, there will always be 5cm of that and the temperature at which the experiment will take place will always be near enough the same because we shall carry it out at room temperature and although we cannot always control this we will always do the experiment in the same room as to try to lessen this possible change. We will change however the concentration of the hydrochloric acid. How does temperature affect the rate of a chemical reaction? When two different chemicals react, the molecules of the chemicals have to collide with each other. If they do collide with enough energy it will become a successful collsion. The two molecules will only react if they have enough energy. By adding heat to the mixture this will increase the reaction levels as it supplies more energy to the molecules. Increasing temperature will mean the molecules move around quicker. This describes kinetic energy. I didn’t pick temperature as a variable because it would be very hard to control. We did do all the experiments in the same classroom to try and keep this the same. How do catalysts affect the rate of a reaction? A catalyst is something that will speed up a reaction of chemicals. Only small amounts of the catalyst are required to produce a dramatic

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