Magnessium and Hydrochloric Acid essays

Magnessium and Hydrochloric Acid essays In this investigation I am trying to find out whether or not the concentration of hydrochloric acid affects the rate of reaction. To do this we are going to make up different concentrations of hydrochloric acid starting with 100% and working our way to 20%. I predict that as the concentration of the hydrochloric acid increases then the yield of hydrogen also increases as the reaction continues. I have predicted this, as there are many reasons behind increasing the rate of hydrogen being produced by this reaction between magnesium and hydrochloric acid. The rate of reaction depends on how many successful collisions there are between the acid (hydrochloric acid) and the metal, which, in this experiment is magnesium. This can be explained by the collision theory. The basic idea, behind this, is that particles have to collide, and collide hard enough in order for a reaction to take place. One of the factors that determine the rate of reaction is the temperature of the substance, which is being analysed. When the temperature is increased, the particles move more rapidly. If they are moving faster, they are going to have more collisions between the acid and magnesium. Another method of increasing the rate of reaction is to make the solution more concentrated, this means there are more particles of reactant moving about between the acid molecules which makes collisions between the important particles more likely. In addition to this increasing the surface area can increase the rate of reaction. This means the particles surrounding the magnesium in the acid solution will have more area to work on so there will be more collisions that are useful. I found the information on the collision theory on the Internet. The websites I used were www.s-cool.co.uk and www.bbc.co.uk/learning The product after this experiment is hydrogen and magnesium chloride. The equation to show this is: - Magnesium + hydrochloric acid Magn...