When cobalt chloride is added to pure water,the Co²⁺ ions hydrate.The hydrated form then reacts with the Cl^- ions to set up the equilibrium shown here:
Co(H₂O) ₆²⁺ + 4Cl^-
CoCl₄^2- + 6H₂O
(pink)
(blue)
Which statement describes the change that the system will undergo if potassium chloride is added?

Question

When cobalt chloride is added to pure water,the Co²⁺ ions hydrate.The hydrated form then reacts with the Cl^- ions to set up the equilibrium shown here:
Co(H₂O) ₆²⁺ + 4Cl^-

When cobalt chloride is added to pure water,the Co<sup>2+</sup> ions hydrate.The hydrated form then reacts with the Cl<sup>-</sup> ions to set up the equilibrium shown here: Co(H<sub>2</sub>O) <sub>6</sub><sup>2+</sup> + 4Cl<sup>-</sup> CoCl<sub>4</sub><sup>2-</sup> + 6H<sub>2</sub>O (pink) (blue) Which statement describes the change that the system will undergo if potassium chloride is added? A) It should become more pink. B) Nothing will change. C) The silver ion will react with the CoCl<sub>4</sub><sup>2-</sup>. D) Water will be produced. E) It should become more blue.

CoCl₄^2- + 6H₂O
(pink)
(blue)
Which statement describes the change that the system will undergo if potassium chloride is added?

Quizplus · Accepted Answer

When potassium chloride is added, the concentration of Cl- ions increases, which shifts the equilibrium to the left to counteract the stress. This leads to more Co(H2O)62+ ions hydrating and reacting with Cl- ions to form the blue CoCl42- ions, causing the solution to become more blue.

When Cobalt Chloride Is Added to Pure Water,the Co2+ Ions

When Cobalt Chloride Is Added to Pure Water,the Co²⁺ Ions