Equilibrium And Le Hotelier’s Principle Lab

Equilibrium And Le Hotelier’s Principle Lab

Equilibrium and Le Chatelier’s Principle Student Name Date Purpose Procedure

Experimental Data
Activities 1, 2, and 3
Write the chemical equation of the reaction at equilibrium:

Table 1

 

 

	Quantity of Reagents	Quantity of Reagents	Quantity of Reagents	Quantity of Reagents	Quantity of Reagents
Reagent	Test Tube #1, Control	Test Tube #2	Test Tube #3	Test Tube #4	Test Tube #5
Copper (II) Chloride	2.0 mL	2.0 mL	2.0 mL	2.0 mL	2.0 mL
Sodium Chloride	0.0 mL	1.0 mL	2.0 mL	4.0 mL	4.0 mL
Color of Solution
Silver Nitrate	N/A	N/A	1.0 mL	N/A	N/A
Color of Solution	N/A	N/A		N/A	N/A
Water	N/A	N/A	N/A	3.0 mL	N/A
Color of Solution	N/A	N/A	N/A		N/A

 

 

Activity 4

 

Table 2

 

Stress	Water Bath Temperature (°C)	Solution Temperature (°C)	Solution Color	Direction of Shift (reactants or products) ( or )
Test tube #4 (Control Solution)
Hot Water Bath
Cold Water Bath

Photos
Place the tubes on a white paper with adequate light. Use of white paper as a background will assist with view and color comparisons. Color changes may be subtle. Labels and colors of the liquid must be visible

Photo 1

Insert the photo of test tubes #1-5 from Activity 1. Compare the colors of the solutions in test tubes #2–5 to that in test tube #1.

Photo 2

Insert the photo of test tubes #1 and #3 from Activity 2.

Photo 3

Insert the photo of test tubes #4 and #5 from Activity 3.

Photo 4

Insert the photo of test tubes #4 and #5 from Activity 4, step 8.

Photo 5

Insert the photo of test tubes #4 and #5 from Activity 4, step 13.

Lab Questions

1. What is the “common ion” that you added to test tubes #2–5, and how it affect the equilibrium reaction?

2. Write an equation showing what happens when AgNO3 is added, and explain why the equilibrium shifts. Provide the experimental observation.

3. Explain the equilibrium shift that occurs when water is added to the original equilibrium reaction. Provide the experimental observation.

1

K:CPMIDistance Learning TeamDL team ImagesDistance Learning Logo.jpg

© 2016 Carolina Biological Supply Company

4. Write “heat” on either the left or right side of this equation, based upon Activity 4.

_____ + Cu(H2O)62+(aq) + 4Cl–(aq) CuCl42–(aq) + 6H2O(l) + _____

Blue

Green

5. Consider the chemical reaction: N2 + 3H2 yields 2NH3. The equilibrium constant is K = 6.0 x 10-2, and concentrations are as follows [H2] = 2.5 x 10-1 M, [N2] = 4.0 M, and [NH3] = 1.0 x 10-4 M. Is the reaction at equilibrium? If not, which direction would it shift? Show your calculations.

6. Given this reaction at equilibrium, C(s) + CO2(g) 2CO(g) (∆H° = 119kJ), explain the changes that would occur when the following stresses are applied:

(a) CO is removed.

(b) Heat is removed.

(c) CO2 is added.

7. Describe sources of error in this experiment.

Conclusions

The post Equilibrium And Le Hotelier’s Principle Lab appeared first on Grade Master-Pro.

Write my Essay. Premium essay writing services is the ideal place for homework help or essay writing service. if you are looking for affordable, high quality & non-plagiarized papers, click on the button below to place your order. Provide us with the instructions and one of our writers will deliver a unique, no plagiarism, and professional paper.

Get help with your toughest assignments and get them solved by a Reliable Custom Papers Writing Company. Save time, money and get quality papers. Buying an excellent plagiarism-free paper is a piece of cake!

All our papers are written from scratch. We can cover any assignment/essay in your field of study.