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