how can you use pH to separate Ni(II) ions from Hg(II) ions?
The solubility product of HgS is roughly 2 x 10-53 and that of NiS is 3 x 10-19. If we wanted to separate these two ions by a differential precipitation, how might I do that?
Consider the use of hydrosulfuric acid as your precipitating agent. Look up the Ka1 and Ka2 for hydrosulfuric acid and use those values to perform a calculation showing the pH range needed to separate the two metal ions.
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how can you use pH to separate Ni(II) ions from Hg(II) ions? The solubility product of...