Last modified: Wed 02/25/2009 02:09:47 pm
BCE for Introduction to Extent of a Reaction Exploration

Extent of a Reaction Exploration.

Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.

First Name:

Last Name:

Laboratory Section:

In this exploration you will collect some experimental data for a chemical reaction. Click here to bring up a new window with the simulation.

1. The reaction we are investigating in this simulation is

R + GB ---> RG + B

a) In the Table I below enter the amounts of R, BG, RG and B into the cells in the Initial Concentration (the second) row.

Experiment #1 R + BG --> RG + B
Initial Concentration - I  
Concentration Change - C  
Ending Concentration - E  

Table I.

Next, in the simulation window for the reaction, click on the Resume Button then click on the Enable Reactions button. When you feel the reaction is complete click the Pause button.

b) Record the amounts of R, BG, RG and B in the Ending Concentrations row in Table I.

c) Determine the change in concentration for R, BG, RG and B and enter the amounts in the Concentration Change row Table II.

2. Reset the simulation by clicking on the Reset button. Using the Control Bar region, change the initial amount of R to 1.00 mol and the initial amount of BG to 1.00 mol. Changing the initial amount can be accomplished by either sliding the ControlBar for each reactant, or by clicking on the amount and typing in the new amount and pressing the Enter key on the keyboard.

a) In the Table II below enter the amounts of R, BG, RG and B into the cells in the Initial Concentration (the second) row.

Experiment #2 R + BG --> RG + B
Initial Concentration - I  
Concentration Change - C  
Ending Concentration - E  

Table II.

Click on the Resume Button then click on the Enable Reactions button. When you feel the reaction is complete click the Pause button.

b) Record the amounts of R, BG, RG and B in the Ending Concentrations row in Table II.

c) Determine the change in concentration for R, BG, RG and B and enter the amounts in the Concentration Change row in Table II.

3. If the Initial Concentrations of R and BG are both 1.5 M predict the Ending Concentrations and the Concentraction Change for R, BG, RG and B in Table III below.

Experiment #3 R + BG --> RG + B
Initial Concentration - I

1.5

1.5

0

0

Concentration Change - C  
Ending Concentration - E  

Table III.

b) Briefly explain how your arrived at your prediction.

4. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

5. If there is one question you would like to have answered in lecture, what would that question be?