In an aqueous chloride solution cobalt(I1) exists in equilibrium with the complex ion CoCl,2", Co2*(aq) is pink and CoCl,"(aq) is blue. At High Temperature the blue color is strong. At Low Temperature the pink color predominates. If we represent the equilibrium as: Co"(aq) + 4Cr (aq) = Cocl,* (aq) We can conclude that: J1. This reaction is A. Exothermic B. Endothermic C. Neutral D. More information is needed to answer this question. ]2. When the temperature is increased the equilibrium constant, K: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question. ]3. When the temperature is increased the equilibrium concentration of Co": A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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In an aqueous chloride solution cobalt(I1) exists in equilibrium with the complex ion CoCl,2, Co2*(aq) is pink and CoCl,2"(aq) is blue.
At Low Temperature the pink color predominates.
At High Temperature the blue color is strong.
If we represent the equilibrium as: Co?*(aq) + 4CI (aq)= CoCl," (aq)
We can conclude that:
J1. This reaction is:
A. Exothermic
B. Endothermic
C. Neutral
D. More information is needed to answer this question.
2. When the temperature is increased the equilibrium constant, K:
A. Increases
B. Decreases
C. Remains the same
D. More information is needed to answer this question.
3. When the temperature is increased the equilibrium concentration of Co2*:
A. Increases
B. Decreases
C. Remains the same
D. More information is needed to answer this question.
Transcribed Image Text:In an aqueous chloride solution cobalt(I1) exists in equilibrium with the complex ion CoCl,2, Co2*(aq) is pink and CoCl,2"(aq) is blue. At Low Temperature the pink color predominates. At High Temperature the blue color is strong. If we represent the equilibrium as: Co?*(aq) + 4CI (aq)= CoCl," (aq) We can conclude that: J1. This reaction is: A. Exothermic B. Endothermic C. Neutral D. More information is needed to answer this question. 2. When the temperature is increased the equilibrium constant, K: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question. 3. When the temperature is increased the equilibrium concentration of Co2*: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question.
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