Cobalt ions form the complex ion hexaaquacobalt(II), [Co(H₂O)6]2+, with water molecules. In the presence of chloride ions the complex ion tetrachlorocobalt(II) [CoCl4]2 is formed. [Co(H₂O)6]2+ (aq, pink) + 4Cl- (aq) = [CoCl4]²- (aq, blue) + 6H₂0 (1) Focus Questions: 1. What is the dominant species of cobalt at each step? 2. Is the formation of the tetrachlorocobalt(II) complex an exothermic or an endothermic process? (Hint: watch for temperature changes). 3. Are there any other ways of shifting this equilibrium?
Cobalt ions form the complex ion hexaaquacobalt(II), [Co(H₂O)6]2+, with water molecules. In the presence of chloride ions the complex ion tetrachlorocobalt(II) [CoCl4]2 is formed. [Co(H₂O)6]2+ (aq, pink) + 4Cl- (aq) = [CoCl4]²- (aq, blue) + 6H₂0 (1) Focus Questions: 1. What is the dominant species of cobalt at each step? 2. Is the formation of the tetrachlorocobalt(II) complex an exothermic or an endothermic process? (Hint: watch for temperature changes). 3. Are there any other ways of shifting this equilibrium?
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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How can we answer questions 1-3?
![Cobalt ions form the complex ion hexaaquacobalt(II), [Co(H₂O)6]2+, with water molecules.
In the presence of chloride ions the complex ion tetrachlorocobalt(II) [CoCl4]² is formed.
[Co(H₂O)6]2+ (aq, pink) + 4Cl(aq) = [CoCl4]²(aq, blue) + 6H₂0 (1)
Focus Questions:
1. What is the dominant species of cobalt at each step?
2. Is the formation of the tetrachlorocobalt(II) complex an exothermic or an
endothermic process? (Hint: watch for temperature changes).
3. Are there any other ways of shifting this equilibrium?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9437567b-8da5-455d-a4fe-2bd0f454b63f%2F7f88c44f-570d-45aa-9d58-8e7f7791d6dd%2Fczxfv1o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Cobalt ions form the complex ion hexaaquacobalt(II), [Co(H₂O)6]2+, with water molecules.
In the presence of chloride ions the complex ion tetrachlorocobalt(II) [CoCl4]² is formed.
[Co(H₂O)6]2+ (aq, pink) + 4Cl(aq) = [CoCl4]²(aq, blue) + 6H₂0 (1)
Focus Questions:
1. What is the dominant species of cobalt at each step?
2. Is the formation of the tetrachlorocobalt(II) complex an exothermic or an
endothermic process? (Hint: watch for temperature changes).
3. Are there any other ways of shifting this equilibrium?
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