A solution containing Co(H2O)62+(aq), CoCl42–(aq), and Cl–(aq) at equilibrium at room temperature is — Equilibrium Chemistry Question
Question
A solution containing Co(H2O62+(aq), CoCl42–(aq), and Cl–(aq) at equilibrium at room temperature is initially pink. When heated, the solution turns blue. Then, when Ag+(aq) is added, the solution turns back to pink. Which statements are correct?
I. Co(H2O62+(aq) is pink.
II. Formation of CoCl42-(aq) from Co(H2O62+(aq) and Cl–(aq) is exothermic.
A.✓ Correct
I only
B.
II only
C.
Both I and II
D.
Neither I nor II
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