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Kinetics - Lab Report Example

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4. Take a timer from the upper right hand corner of the screen and place it on the workbench. Wait till you obtain a round number on the timer to begin timing the reaction. Be ready to begin timing the reaction when you add the ammonium persulfate to the solution in the 250 mL beaker.
3. Add 1 ml of starch indicator and 0.05 ml of 0.1 M EDTA solution from the Chemical Shelf to the same 250 ml beaker. This drop of EDTA solution is to minimize the effects of trace quantities of metal ion impurities that would cause spurious effects on the reaction.
4. Take a timer from the upper right hand corner of the screen and place it on the workbench. Wait till you obtain a round number on the timer to begin timing the reaction. Be ready to begin timing the reaction when you add the ammonium persulfate to the solution in the 250 mL beaker.
5. Prepare a 0.1 M solution of ammonium persulfate by diluting the 0.2 M solution. To do this take a 50 ml beaker from the Glassware Shelf and place it on the workbench. Add 12.5 ml of water and 12.5 ml of 0.2 M ammonium persulfulate.
3. Add 1 ml of starch indicator and 0.05 ml of 0.1 M EDTA solution from the Chemical Shelf to the same 250 ml beaker. This drop of EDTA solution is to minimize the effects of trace quantities of metal ion impurities that would cause spurious effects on the reaction.
4. Take a timer from the upper right hand corner of the screen and place it on the workbench. ...
This drop of EDTA solution is to minimize the effects of trace quantities of metal ion impurities that would cause spurious effects on the reaction.

4. Take a timer from the upper right hand corner of the screen and place it on the workbench. Wait till you obtain a round number on the timer to begin timing the reaction. Be ready to begin timing the reaction when you add the ammonium persulfate to the solution in the 250 mL beaker.

5. Prepare a 0.1 M solution of ammonium persulfate by diluting the 0.2 M solution. To do this take a 50 ml beaker from the Glassware Shelf and place it on the workbench. Add 12.5 ml of water and 12.5 ml of 0.2 M ammonium persulfulate.

6. To begin the reaction, add the contents of the 50 ml beaker to the 250 ml beaker by dragging the 50 ml beaker on top of the 250 ml beaker and selecting all.

7. Record the time for the appearance of the black color. 16 ml of Ammonium persulphate

Trial 3

1. Take a 250 ml beaker from the Glassware Shelf and place it on the workbench.

2. Add 25 ml of 2 M NaI solution from the Chemicals Shelf to the beaker. Dilute the NaI solution to 0.1 M by adding 25 ml of water.

3. Add 1 ml of starch indicator and 0.05 ml of 0.1 M EDTA solution from the Chemical Shelf to the same 250 ml beaker. This drop of EDTA solution is to minimize the effects of trace quantities of metal ion impurities that would cause spurious effects on the reaction.

4. Take a timer from the upper right hand corner of the screen and place it on the workbench. Wait till you obtain a round number on the timer to begin timing the reaction. Be ready to begin timing the reaction when you add the ammonium persulfate to the solution in the 250 mL beaker.

5. To begin the reaction, add 25.0 mL of the 0.2 M ammonium ...Show more

Summary

6. Add 5.0 mL of 0.2 M (NH4)2S2O solution from the Chemicals shelf to the beaker. The ammonium persulfate reacts with the free iodine ions from the potassium iodide in solution to produces iodine molecules. Observe the beaker and record any color changes.
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