Introduction : in this term in chemistry class I was learning about rate of reaction. As defined by the Britannica encyclopedia, a chemical reaction is a process where one or more substances (reactants) are converted to one or more different products because of the rearrangement of atoms of the reactants. For the reaction to occur, the particles must collide with each other and in order to succeed there must be enough energy for the collision because a collision with little energy will not produce a reaction. There are four main factors that could affect the rate of reaction these include the concentration of the reactant, the temperature, the surface area of solid reactant, and the pressure. To prove this theory, I will holding a rate of reaction experiment. I will investigate how the difference of hydrochloric acid affect the rate of reaction in 30 seconds reaction between hydrochloric acid and magnesium with balanced equation of Mg + 2HCl → MgCl2 + H2. According to the chemguide website, by increasing the concentration of the reactant the particles will become more crowded and there is a greater chance of the particles colliding. …show more content…
Hypothesis : My hypothesis for this experiment is that if I change the concentration it will affects the rate of reaction. The higher the concentration of a dissolved reactant, the faster the rate of a reaction and it will more likely for the particles to collide and there will be a greater chance particles to react and the increasing of rate of reaction.