An Investigation Into the Factors Affecting the Rate of the Reaction Between Calcium Carbonate and Hydrochloric Acid
An Investigation into the Factors Affecting the Rate of the Reaction between Calcium Carbonate and Hydrochloric Acid
A chemical reaction is the process by which atoms or groups of atoms are redistributed, resulting in a change in the molecular composition of substances. The reaction rate is how quickly a reaction occurs and this can be affected by four different factors:
¡¤ changing the surface area of any solids involved
¡¤ changing the concentration of reactants in solution
¡¤ changing the temperature at which it is carried out
¡¤ the use of a catalyst
I am going to investigate into exactly how one of these variables affects the reaction rate and I believe the most suitable variable to change is the concentration of the solution as all necessary equipment is available within the school chemistry lab, and five results can be obtained easily and within the time allowance.
I will be using the following reaction in my investigation:
Calcium carbonate + Hydrochloric acid Calcium chloride + Carbon dioxide + Water CaCO3 (s) + 2HCl (aq) CaCl2 (aq) + CO2 (g) + H2O (l)
I have chosen to use these substances because research has shown that they react well together. This will mean that I will be able to have quick and efficient experiments.
Aim: I wish to test how the concentration of the hydrochloric acid affects the rate of a reaction
In order to fulfil this aim I have to come up with a suitable method that will produce reliable data so that a valid and accurate conclusion can be drawn. Carbon dioxide seems an obvious product from the reaction to use to calculate the rate, as it is common scientific knowledge that the faster the reaction, the more carbon dioxide should be produced. The test for the presence of carbon dioxide is that it turns transparent limewater cloudy and I could use this idea to base my experiment on.
Previously we have studied the effect of changing the
A chemical reaction is the process by which atoms or groups of atoms are redistributed, resulting in a change in the molecular composition of substances. The reaction rate is how quickly a reaction occurs and this can be affected by four different factors:
¡¤ changing the surface area of any solids involved
¡¤ changing the concentration of reactants in solution
¡¤ changing the temperature at which it is carried out
¡¤ the use of a catalyst
I am going to investigate into exactly how one of these variables affects the reaction rate and I believe the most suitable variable to change is the concentration of the solution as all necessary equipment is available within the school chemistry lab, and five results can be obtained easily and within the time allowance.
I will be using the following reaction in my investigation:
Calcium carbonate + Hydrochloric acid Calcium chloride + Carbon dioxide + Water CaCO3 (s) + 2HCl (aq) CaCl2 (aq) + CO2 (g) + H2O (l)
I have chosen to use these substances because research has shown that they react well together. This will mean that I will be able to have quick and efficient experiments.
Aim: I wish to test how the concentration of the hydrochloric acid affects the rate of a reaction
In order to fulfil this aim I have to come up with a suitable method that will produce reliable data so that a valid and accurate conclusion can be drawn. Carbon dioxide seems an obvious product from the reaction to use to calculate the rate, as it is common scientific knowledge that the faster the reaction, the more carbon dioxide should be produced. The test for the presence of carbon dioxide is that it turns transparent limewater cloudy and I could use this idea to base my experiment on.
Previously we have studied the effect of changing the