Chemistry lab

Module 5 Lab 3 Rubric

Due to issues with this lab, only do “Part 1.

b. Watch the Tutorials

” and “Part 1. c.  Cobalt Chloride and LeChatliers Principle Lab .”

 When doing “Part 1. c.”, click on the words “Cobalt Lab” (on the right side just above WorkBench 1) which will have some directions. After following the directions given there, create a Word document where you will answer the following 4 items:

Consider the chemical reaction: Co(H  2O)  6  2+(aq) + 4Cl  -(aq) <==> CoCl  4  2-(aq) + 6H  2O(l)

1. Predict the effect of removing chloride ions. In which direction will the above reaction shift?

2. Predict the effect of adding HCl. In which direction will the above reaction shift?

3. Is the reaction endothermic or exothermic?

4. The environmental temperature for this lab is 25   oC. Calculate the K value (equilibrium constant) at this temperature as well as the K value at any other temperature of your choosing between 0 and 100    0C. Report this new K value and at what temperature it was found.

Submit the Word document for Module 5 Lab 3. Each item is worth 6 points.

Module 05 Lab 03 – Equilibrium Simulation

Instructions for Virtual Lab: Record all observations and take screenshots of your work.

Go to lab page: 

http://chemcollective.org/equilib

1. LeChatiler’s Principle

a. Chemical Equillibrium Concept Test (Take Screen shots of answers)

b. Watch the Tutorials

i. Concentration

ii. LeChatlier’s Principle

iii. Using LeChatliers Principle

iv. Reversible Reactions

v. Temperature

vi. Volume/Presure

c. Cobalt Chloride and LeChatiliers Principle Lab

2. Process of Reaction

a. Process of Reaction Concept Test (Take Screen shots of answers)

3. Under Equilibrium Calculations

a. Chemical Equilibrium Test (Take Screen shots of answers)

4. Common Ion Effect

a. Solubility and common Ion Effect

Submit a zip file of all screenshots for this lab activit

Module 5 Lab 1 Rubric

Complete Unit 5, Modules 13-15, Pages 116-117,119-122, 125-128, 130-132, 134, 137-139

NOTE:

There are 17 pages for which you need screenshots. The rubric states 18 screenshots. This means, if you attempt the lab, you will get 2 pts free.

Module 05 Lab 01 – Solar Power

The title of the screenshot images should include the page number. If a page has multiple screenshots, label the image as part 1, part 2, etc. For example, if page 31 had to be taken in two screenshots, then label the images as “page31_part1” and “page31_part2.”

To access your lab, please follow these instructions– *if you have already done steps 1-10, simply log in to view your course and participate in lab activities:

1. Please go to: 

https://oli.cmu.edu/jcourse/webui/register/student.do

2. This will bring you to the “Course Key Students” page.

3. Enter the Course Key “GRC19” in the box and click “register.”

4. Create an account by filling in the information (be sure to use an account ID and password you will remember and make a note of it for future logins).

5. Click “I’m not a robot” and “Sign Up.”

6. Confirm your account by clicking on “confirm account.”

7. Read the consent form, then agree by choosing “I agree” and “submit.”

8. Click on “Register” for the Chemistry Virtual Lab Activities with Instructor Sandra Raysor.

9. Click on “Enter course” next to the red arrow to begin the lab.

10. Find the lab required for the assignment and begin work.

Should you experience issues, please contact the PSC at 1-866-693-2211 and let them know you need assistance with labs in the CHM1100 course.

Purposes: To determine the best substance for storing and transferring thermal energy.

All of the instructions for this lab are located within ChemCollective. You will step through this lab completing different tasks on different pages. At the end of each task, you will see a “Correct” or “Incorrect” screen. You are able to try again if you see an “Incorrect” screen. Be sure to take a screenshot of each “Correct” screen. Submit a zip file of all screenshots for this lab activity.

Module 5 Lab 2 Rubric

Due to issues with this lab, only do “Part 1. a. Determine the Concentration of the Unknown Strong Acid.”

You will find the concentration of an unknown acid. In a Word document, write the math you used while solving for this concentration. Show all your work. Use the equation editor in Word to write your equations neatly. The equation editor is found under the “Insert” tab in Word, where you can insert an equation. Submit this Word document and the screenshot of your correctly completed lab for Module 5 Lab 2. The screenshot is worth 7.5 points and the Word document showing all your work is worth 7.5 points.

Module 05 Lab 02 – Acid Base Chemistry

Instructions for Virtual Lab: Record all observations and take screenshots of your work.

Go to lab page: 

http://chemcollective.org/acid-base

1. Strong Acid and Bases

a. Determine the Concentration of the Unknown Strong Acid          

b. Concept Test

2. Weak Acid and Bases

a. Unknown Weak Acid Problem

b. Unknown Base Problem

Submit a zip file of all screenshots for this lab activity.