Show a sample calculation, using your data, of the equilibrium constant. Report an average equilibrium constant for the reaction at 25 oC and the equilibrium constant for the reaction at 100 o   Summarize the changes in concentration and temperature that you carried out in B-D. Explain each of the color changes in terms of LeChâtelier’s Principle.

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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  1. Show a sample calculation, using your data, of the equilibrium constant. Report an average equilibrium constant for the reaction at 25 oC and the equilibrium constant for the reaction at 100 o  
  2. Summarize the changes in concentration and temperature that you carried out in B-D. Explain each of the color changes in terms of LeChâtelier’s Principle.
  3. Explain the color change observed in Trial E in terms of LeChatelier’s Principle. Include your determination about whether the reaction is exothermic or endothermic and how this explains the constants that you calculated at 25oC and 100o  
[Co(H20)6]2* (ag) + 4 Cl - (ag) 2 CoClą2- (ag) + 6 H20 (1).
Pink
Blue
[COCL4]
K. =
[Co(H,0)6J[Cl]«
Sample Data Table
Trial Initial Color Final Color [Co(H20)62*] (M)
[CI] (M)
[CoCl42-1 (M)
Ke
A
Pink
X
0.967
1.87
0.033
2.79 x 10-3
В
Pink
Blue
0.297
4.44
0.328
2.84 x 10-3
C
Pink
Redish
0.769
0.154
1.23 х 10-6
2.84 x 10-3
Blue
Purple
Grey
0.416
2.39
3.88 x 10-2
2.86 х 103
E
Pink
0.642
0.568
0.358
5.36
Transcribed Image Text:[Co(H20)6]2* (ag) + 4 Cl - (ag) 2 CoClą2- (ag) + 6 H20 (1). Pink Blue [COCL4] K. = [Co(H,0)6J[Cl]« Sample Data Table Trial Initial Color Final Color [Co(H20)62*] (M) [CI] (M) [CoCl42-1 (M) Ke A Pink X 0.967 1.87 0.033 2.79 x 10-3 В Pink Blue 0.297 4.44 0.328 2.84 x 10-3 C Pink Redish 0.769 0.154 1.23 х 10-6 2.84 x 10-3 Blue Purple Grey 0.416 2.39 3.88 x 10-2 2.86 х 103 E Pink 0.642 0.568 0.358 5.36
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