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The equilibrium constant Ka for the reaction Co(H2O)63+ (aq) + H2O (l) ---> Co(H2O)5(OH)2+ (aq) + H3O+ (aq) is 1.0x10-5  A) Calculate the pH of a 0.16 M  solution of Co(H2O)63+. pH = _________ B) Will a 0.60 M  solution of cobalt(II) nitrate have a higher or lower pH than a 0.60 M  solution of cobalt(III) nitrate?   - higher- lower- same   C) Co3+ complex ions are generally low-spin cases, whereas Co2+ complex ions are generally high-spin cases. Explain. The magnitude of  for complexes of the same ligand _________(increases/decreases/does not change) as the charge on the metal ion increases. If this is the situation, how many unpaired electrons are present in Co(H2O)63+and Co(H2O)5(OH)2+? Co(H2O)63+: ________ unpaired electrons Co(H2O)5(OH)2+: ________ unpaired electrons

The equilibrium constant Ka for the reaction Co(H2O)63+ (aq) + H2O (l) ---> Co(H2O)5(OH)2+ (aq) + H3O+ (aq) is 1.0x10-5  A) Calculate the pH of a 0.16 M  solution of Co(H2O)63+. pH = _________ B) Will a 0.60 M  solution of cobalt(II) nitrate have a higher or lower pH than a 0.60 M  solution of cobalt(III) nitrate?   - higher- lower- same   C) Co3+ complex ions are generally low-spin cases, whereas Co2+ complex ions are generally high-spin cases. Explain. The magnitude of  for complexes of the same ligand _________(increases/decreases/does not change) as the charge on the metal ion increases. If this is the situation, how many unpaired electrons are present in Co(H2O)63+and Co(H2O)5(OH)2+? Co(H2O)63+: ________ unpaired electrons Co(H2O)5(OH)2+: ________ unpaired electrons

Chemistry
Chemistry
10th Edition
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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The equilibrium constant Ka for the reaction

Co(H2O)63+ (aq) + H2O (l) ---> Co(H2O)5(OH)2+ (aq) + H3O+ (aq)

is 1.0x10-5 

A) Calculate the pH of a 0.16 M  solution of Co(H2O)63+.

pH = _________

B) Will a 0.60 M  solution of cobalt(II) nitrate have a higher or lower pH than a 0.60 M  solution of cobalt(III) nitrate?

 

- higher
- lower
- same
 
C) Co3+ complex ions are generally low-spin cases, whereas Co2+ complex ions are generally high-spin cases. Explain.

The magnitude of  for complexes of the same ligand _________(increases/decreases/does not change) as the charge on the metal ion increases.

If this is the situation, how many unpaired electrons are present in Co(H2O)63+and Co(H2O)5(OH)2+?

Co(H2O)63+: ________ unpaired electrons

Co(H2O)5(OH)2+: ________ unpaired electrons

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