Cobalt ions form complex ions with water and chloride as shown in the reaction. The left side of the reaction is pink, and the right side of the reaction is blue.
Co (H_{2}*O) 6 ^ 2+ +4Cl^ - +heat rightleftharpoons CoCl 4 ^ 2- +6H 2 O
Which statement about the system at equilibrium is correct?
(1 point)
Adding water to a purple solution will turn it blue.
Adding hydrogen chloride (HCI) to a blue solution will turn it purple.
Cooling a purple solution will turn it pink.
Heating a blue solution will turn it purple.