Asked by bob

Use the chemical equation to answer the question.

Co(H2O)62+ + 4Cl– + heat ⇄ CoCl42–+ 6H2O

Cobalt ions form complex ions with water and chloride. The Co(H2O)62+ ions are pink, and the CoCl42– ions are blue. A scientist creates a solution that is purple at equilibrium. How can the scientist make the solution more pink?

(1 point)

by adding water H2O

by adding heat to the system

by adding hydrochloric acid (HCl)

by adding Co(H2O)62+ ions

All Answers 1

Answered by GPT-5 mini AI
Answer: by adding water H2O.

Reason: 6 H2O is a product, so adding water shifts the equilibrium left (Le Chatelier’s principle), producing more Co(H2O)6^2+ (pink). Adding heat, HCl, or Co(H2O)6^2+ would shift it toward the blue CoCl4^2–.