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Kotz et al - Chemistry&Chemical Reactivity 6/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 2/9

Due: Saturday, October 23, 2010 08:00 EDT

About this Assignment

Question
Points
1 2 3 4 5 6
2/3 0/1 0/1 0/1 0/2 0/1
Total
2/9

Description

Chemistry & Chemical Reactivity 6/e by Kotz, Treichel, and Weaver published by Brooks/Cole Publishing now has animations with conceptual questions and tutorial problems offering feedback and hints to guide student content mastery, as well as over 1300 end-of-chapter questions. You can check out a sampling of this exciting development below. WebAssign is the most utilized homework system in chemistry. Designed by teachers for teachers, WebAssign is easy to use, reliable -- a trusted companion to your teaching. Sign up for a Test Drive today!

Question 1 is a traditional end-of-chapter question.

Question 2 is the same as Question 1, but offered as an interactive Tutorial Question.

Question 3 is a Simulation Question that allows a student to experiment with various options for 4 reactions and answer questions about them.

Question 4 is a Simulation Question modeling a chemical reaction to help a student visualize equilibria.

Question 5 is an algorithmic, randomized end-of-chapter question that checks for significant figures.

Question 6 is a structured Tutorial Question that offers feedback to the student at each stage of the solution.

Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. 2/3 points All Submissions Notes Question: KT6 16.P.004.
Question part
Points
Submissions
1 2 3
1 0/1 1
1/50 0/50 1/50
Total
2/3
 
The reaction below has an equilibrium constant, K, of 170 at 25°C.

2 NO2(g) reverse reaction arrow N2O4(g)

If 2.6 multiplied by 10-3 mol of NO2 is present in a 10. L flask along with 2.3 multiplied by 10-3 mol of N2O4, is the system at equilibrium?
    

Your answer is correct.


Give the value of Q to support your answer.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.

If it is not at equilibrium, does the concentration of NO2 increase or decrease as the system proceeds to equilibrium?
    

Your answer is correct.



2. –/1 points Notes Question: KT6 16.P.004.Tutor.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Tutorial Question
If you have trouble answering the main question(s) below, a tutorial will guide you through the solution process.



3. –/1 points Notes Question: KT6 16.Sim. Writing Equilibrium Expressions
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 



4. –/1 points Notes Question: KT6 16.Sim. The Meaning of the Equilibrium Const.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Simulation Question
Use the simulation below to answer the Exercise question(s) which follow.



5. –/2 points Notes Question: KT6 16.P.014.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Cyclohexane, C6H12, a hydrocarbon, can isomerize or change into methylcyclopentane, a compound of the same formula (C5H9CH3) but with a different molecular structure.
The equilibrium constant is 0.12 at 25°C. If you had originally placed 0.046 mol of cyclohexane in a 2.5 L flask, what would be the concentrations of cyclohexane and methylcyclopentane when equilibrium is established?
[C6H12]
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 M
[C5H9CH3]
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 M

6. –/1 points Notes Question: KT6 16.P.016.Tutor.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Tutorial Question
If you have trouble answering the main question(s) below, a tutorial will guide you through the solution process.


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