The cobalt complexes participating in the equilibrium below comprise a humidity sensor. From Le Chatelier's principle, when the air is moist, what color is the cobalt complex? Co(H2O)6+2 + 4Cl- <---> CoCl4-2 + 6H2O? Write explanation. a) pink b) blue c) white d) black

The cobalt complexes participating in the equilibrium below comprise a humidity sensor. From Le Chatelier's principle, when the air is moist, what color is the cobalt complex? Co(H2O)6+2 + 4Cl- <---> CoCl4-2 + 6H2O? Write explanation. a) pink b) blue c) white d) black

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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COBALT COMPLEX: [CoCl4]2-(aq) + 6H2O(l) « [Co(H2O)6]2+(aq) + 4Cl-(aq) + Heat Blue Pink STEPS #- Solutions Observations 1-DISSOLVE COBALT COMPLEX PINK SOLUTION 2-SOLUTION PLUS HCl BLUE SOLUTION 3-ADD WATER PINK SOLUTION 4-HEAT SOLUTION BLUE SOLUTION According to the equilibrium equation, which ion(s) do you have when the solution dissolved? Explain how you know the identity of the ion(s) present. 2. Explain what happened when the HCl was added to the solution. 3. Explain what happened when the H2O was added to the solution. 4. Explain what happened when the solution was heated. Was the reaction exothermic or endothermic?