Question

The pink and blue species below form a violet colored mixture at equilibrium:
[Co(H2O)6]2+ (aq) + 4 Cl- (aq) [CoCl4]2- (aq) + 6 H2O (l)
(pink) (blue)
If the concentration of [Co(H2O)6]2+ is increased, what happens to the solution?
A) The concentration of [CoCl4]2- increases.
B) The concentration of [CoCl4]2- decreases.
C) The solution becomes colorless.
D) No color change is observed.

Answer

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