The rate of reaction.
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Background Knowledge The rate of reaction depends on the speed at which a reaction will take place. The speed of a reaction can be observed either by how quickly the reactants are used up or how quickly the products are forming. The rate of reaction can be affected by various factors including temperature, the higher the temperature the more energy the particles will have therefore the number of collisions will increase. It can also be affected by a catalyst, the size of the particles (or surface area) and the concentration. The factor which I am concerned with in this experiment is the concentration of sodium triosulphate and hydrochloric acid. The rate of reaction simply depends on how often and how hard the reacting particles collide with each other. The more collisions that take place will increase the rate of reaction, when the concentration is increased, it means that there are more particles...

