The Effect of Temperature and Concentration on the Rate of the Briggs-Rauscher Reaction
Evaluation
Like any experiment, there were a number of potential errors during the procedure of the experiment. Errors could have arisen as a result of the uncertainties associated with the instruments I used to take measurements, and also as a result of errors associated with the actual method. Of course, due to the limitations of the procedure, they could not be eliminated completely, so I will explain what I did to reduce them to an acceptable level and how I could have improved my method to reduce them even further.
Equipment justification
The following table shows the reasons for my choice of equipment in carrying out my method.
Equipment | Justification | 100 cm3 burette | I needed to accurately measure out large quantities of hydrogen peroxide (90 cm3 and 150 cm3). The 100 cm3 burette is a precise instrument and would allow me to measure out the hydrogen peroxide by filling it fewer times than I would need to with 50 cm3 burette. | 50 cm3 burette | I needed to repeatedly measure out small volumes of solutions A–I. The burette made the task convenient, and it is a precise instrument. | 250 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | 100 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | Top pan balance | I needed to accurately weigh out small amounts of solid when making up my solutions. | 25 cm3 Mohr pipette | I used the pipette to accurately transfer sulfuric acid when making up solutions. I could not do this with a volumetric pipette, as the volume I transferred was 20 cm3. | Distilled water | I used the distilled water to wash out any glassware and storage jars before using them to avoid contamination. | Crushed ice | I used the ice to cool my reactants down to 10 °C. | Water bath | I used the water bath to heat my reactants up to 30 °C, 40 °C and 50 °C. It kept the
Like any experiment, there were a number of potential errors during the procedure of the experiment. Errors could have arisen as a result of the uncertainties associated with the instruments I used to take measurements, and also as a result of errors associated with the actual method. Of course, due to the limitations of the procedure, they could not be eliminated completely, so I will explain what I did to reduce them to an acceptable level and how I could have improved my method to reduce them even further.
Equipment justification
The following table shows the reasons for my choice of equipment in carrying out my method.
Equipment | Justification | 100 cm3 burette | I needed to accurately measure out large quantities of hydrogen peroxide (90 cm3 and 150 cm3). The 100 cm3 burette is a precise instrument and would allow me to measure out the hydrogen peroxide by filling it fewer times than I would need to with 50 cm3 burette. | 50 cm3 burette | I needed to repeatedly measure out small volumes of solutions A–I. The burette made the task convenient, and it is a precise instrument. | 250 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | 100 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | Top pan balance | I needed to accurately weigh out small amounts of solid when making up my solutions. | 25 cm3 Mohr pipette | I used the pipette to accurately transfer sulfuric acid when making up solutions. I could not do this with a volumetric pipette, as the volume I transferred was 20 cm3. | Distilled water | I used the distilled water to wash out any glassware and storage jars before using them to avoid contamination. | Crushed ice | I used the ice to cool my reactants down to 10 °C. | Water bath | I used the water bath to heat my reactants up to 30 °C, 40 °C and 50 °C. It kept the