A 0.25 M HNO3 solution contains 0.020 M Zn2+ and 0.020 M Ni2+. Ca...

18. Aqueous Equilibrium

Precipitation: Ksp vs Q

18. Aqueous Equilibrium

ANSWERS OPTIONS

Bubbling H₂S through the solution can separate Zn²⁺ from Ni²⁺ because solid ZnS will precipitate first.

Bubbling H₂S through the solution can separate Zn²⁺ from Ni²⁺ because solid NiS will precipitate first.

Bubbling H₂S through the solution cannot separate Zn²⁺ from Ni²⁺ because no precipitate will form.

A 0.25 M HNO3 solution contains 0.020 M Zn2+ and 0.020 M Ni2+. Can bubbling H2S through the solution separate Zn2+ from Ni2+? The [H2S] in a saturated solution of H2S is approximately 0.10 M. (Kspa ZnS = 1.7 × 10−2, Kspa NiS = 3.2)