Important do not press the enter key or the Return key while you are answering these questions. Your Browser will interpret either key the same as clicking the mouse on the Submit button. So BE CAREFUL!

Give me some responses to the questions below and I'll give you some extra credit.

SID#:

Laboratory Section:

1. The reaction we are investigating in this simulation is

A + BC ---> AB + C

Looking at the Reaction Region describe the shape and color of each reactant.

A: BC:

2. How many moles of A and BC are present initially (before starting the reaction)?

A: mol

BC: mol

3. Let's make a predicition before starting the reaction. Predict how many moles of AB and C will be formed when the reaction occurs. (Remember the chemical equation in Q1 that describes this reaction.)

AB: mol

C: mol

How many moles of A and BC will remain?

A: mol

BC: mol

What is your reasoning for your prediction?

4. If you have played with the simulation in any way (that is fine) click on the 'Reset' button in the Button region so all of the variables are set to their default values. Set the dropdown button in the Button Region so it reads 'Concentrations'. Now start the reaction by clicking on the 'Enable' button. Watch the reaction as it occurs in the Reaction region. Watch the number of moles of reactants and products. Also watch the concentration chart.

When you feel the reaction is complete enter the moles of the reactants and the products. (NOTE: be sure to make the correct assignment when you read the values of the moles in the Control Bar region and enter their respective values below.)

A: mol

BC: mol

AB: mol

C: mol

5. Lets try another prediction. Suppose I had the following intial conditions;

 

initial

A +

2.0

BC

1.8

--->

AB +

0

C

0

After the reaction reached completion the amount of AB is shown below;

 

final

A +

?

BC

?

--->

AB +

1.4

C

?

How many moles of A, BC and C must be present in the reaction mixture?

A: mol

BC: mol

AB: 1.4 mol

C: mol

6. For this question you get to choose the starting conditions. Click the 'Reset' button then use the scrollbar to change the initial moles of A and BC in the Control Bar region. Enter the initial values below. Then Click the 'Enable' Reaction button, and when you think the reaction is finished enter the final amounts.

INITIAL

A: mol

BC: mol

AB: mol

C: mol

FINAL

A: mol

BC: mol

AB: mol

C: mol

 

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

 


(NOTE: Be sure to print out the next page that summarizes all your responses and bring it with you to class on Monday.)