Use the References to access important values if needed for this question. In aq

Question

Use the References to access important values if needed for this question. In aqueous solution cobalt(II) ion is surrounded by 4 water molecules and has a light pink color. When high concentrations of chloride ion are introduced, a cobalt-chloride complex ion forms that has a distinctive blue color One way to represent this equilibrium is: CoCl4(aq)Co2'(aq) + 4 Cl(aq) An experiment was run to demonstrate that a dynamic equilibrium exists between these two ions. Starting with a special form of Cocl42-(aq) where one of the chloride ions was isotopically labeled ('CI used instead of the naturally occuring isotopes), the system was then allowed to reach equilbrium -2 CI 36C Co CI CI

Explanation / Answer

All these structures are belogs to a particular complex of Co+2 and Cl- ions

All these structures are allowed to reach equilibrium because isotopes are not alter the chemical reactivity nature of the substrate.

A. Y

B. Y

C. Y

D. Y

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