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The chapter opening photograph (page 670) showed how the cobalt(II) chloride equilibrium responded to temperature changes. (a) Look back at that photograph. Is the conversion of the red cation to the blue anion exothermic or endothermic? (b) If hydrochloric acid is added to the violet mixture of cobalt(II) ions shown below, the blue CoCl 4 2− ion is favored. If water is then added to the mixture, a red solution favoring [Co(H 2 O)] 2+ results. Explain these observations in terms of Le Chatelier’s principle. (c) How do these observations prove the reaction is reversible?

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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074
BuyFind

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074

Solutions

Chapter
Section
Chapter 15, Problem 74SCQ
Textbook Problem

The chapter opening photograph (page 670) showed how the cobalt(II) chloride equilibrium responded to temperature changes.

  1. (a) Look back at that photograph. Is the conversion of the red cation to the blue anion exothermic or endothermic?
  2. (b) If hydrochloric acid is added to the violet mixture of cobalt(II) ions shown below, the blue CoCl42− ion is favored. If water is then added to the mixture, a red solution favoring [Co(H2O)]2+ results. Explain these observations in terms of Le Chatelier’s principle.

Chapter 15, Problem 74SCQ, The chapter opening photograph (page 670) showed how the cobalt(II) chloride equilibrium responded

  1. (c) How do these observations prove the reaction is reversible?

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Chapter 15 Solutions

Chemistry & Chemical Reactivity
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