Investigation Into Factors Affecting Rates of Reaction.

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Chemistry: Investigation Into Factors Affecting Rates of Reaction

Planning

This is an investigation to find out how a certain factor affects the rate of a chemical reaction. There are many different factors that do affect the rate of reaction. These include: Temperature at which the reaction takes place, catalyst used in the reaction, surface area/particle size of the reactant and concentration of the reactant. I have carefully eliminated 3 of these factors to leave me with the one I will use in my investigation. I have decided not to use temperature because although it is not impossible, it is very hard to achieve an exact temperature in the school lab. The catalyst factor will not be used because it is not quantitative and the results would be very difficult to analyse. Finally I will not vary the surface area/particle size of the marble chips I will use in this investigation because it would not be able to be very precise. Therefore I have decided to change the concentration of the solution because it is easy to do, and the results can be easily analysed.

I predict that as the concentration of the hydrochloric acid increases, so too