Determining Order from Rates of Reactions
Determining Order from Rates of Reactions
AP Chemistry
Purpose
The focus of this experiment is to recognize that when aqueous solutions of potassium iodate ion (KIO3-) and bisulfite ion (HSO3-) are mixed, a series of reactions will occur, and the final reaction is signaled by the appearance of a dark blue color. My partners and I investigate how the concentration of the reactants affects the rate of reaction. The purpose of this lab is to find the order of the reaction with the respect to sodium bisulfite (NaHSO3-) and potassium iodate (KIO3-).
Materials
Safety goggles/glasses
Two 200 mL beakers
400 mL beaker
Six 100 mL beakers
Two 100 mL graduated cylinders
50 mL graduated cylinder
Solution 1: 250 mL of a 0.024 M solution of KIO3-
Solution 2: 125 mL of a 0.08 M solution of NaHSO3-
100 mL of Distilled water
LabQuest
Temperature Probe
Timer
Stirring Rod Procedure
Before starting the experiment, my partners and I put on our safety glasses and cleaned the equipment (beakers, graduated cylinder, etc.) to avoid any contaminants that may affect our results. Then we began to mix solution 1, solution 2, and distilled water each run at a time as depicted by the table below. For each run, we would record the amount of time it took for each solution to turn a dark blue color.
1. Obtain 250 mL of a 0.024 M solution of potassium iodate (KIO3-) in a 400 mL beaker.
2. Obtain 125 mL of a 0.08 M solution of sodium bisulfite (NaHSO3-) in a 200 mL beaker.
3. Obtain 100 mL of distilled water in a 200 mL beaker.
4. Turn on LabQuest, and connect the temperature probe.
5. Take the temperatures of Solution 1 and Solution 2, and record the data.
6. Compare the two temperatures and if they are less than 1°C, continue with the experiment.
7. If the two temperatures are more than 1°C apart, wait until the temperatures of Solution 1 and Solution 2 are relatively similar.
8. Remove the
AP Chemistry
Purpose
The focus of this experiment is to recognize that when aqueous solutions of potassium iodate ion (KIO3-) and bisulfite ion (HSO3-) are mixed, a series of reactions will occur, and the final reaction is signaled by the appearance of a dark blue color. My partners and I investigate how the concentration of the reactants affects the rate of reaction. The purpose of this lab is to find the order of the reaction with the respect to sodium bisulfite (NaHSO3-) and potassium iodate (KIO3-).
Materials
Safety goggles/glasses
Two 200 mL beakers
400 mL beaker
Six 100 mL beakers
Two 100 mL graduated cylinders
50 mL graduated cylinder
Solution 1: 250 mL of a 0.024 M solution of KIO3-
Solution 2: 125 mL of a 0.08 M solution of NaHSO3-
100 mL of Distilled water
LabQuest
Temperature Probe
Timer
Stirring Rod Procedure
Before starting the experiment, my partners and I put on our safety glasses and cleaned the equipment (beakers, graduated cylinder, etc.) to avoid any contaminants that may affect our results. Then we began to mix solution 1, solution 2, and distilled water each run at a time as depicted by the table below. For each run, we would record the amount of time it took for each solution to turn a dark blue color.
1. Obtain 250 mL of a 0.024 M solution of potassium iodate (KIO3-) in a 400 mL beaker.
2. Obtain 125 mL of a 0.08 M solution of sodium bisulfite (NaHSO3-) in a 200 mL beaker.
3. Obtain 100 mL of distilled water in a 200 mL beaker.
4. Turn on LabQuest, and connect the temperature probe.
5. Take the temperatures of Solution 1 and Solution 2, and record the data.
6. Compare the two temperatures and if they are less than 1°C, continue with the experiment.
7. If the two temperatures are more than 1°C apart, wait until the temperatures of Solution 1 and Solution 2 are relatively similar.
8. Remove the