Can cadmium (II), and mercury (II) be separated quantitatively by precipitation as sulfides from a solution that is 0.15 M cadmium nitrate and 0.10 M in mercuric ions? If possible, what range of sulfide concentration is permissible? Do you expect any interference from the formation of hydroxides of both heavy metals? CdS (144.46); Ksp = 1.0 x 10 ^ -27 HgS (232.66); Ksp = 2.0 x 10 ^ -53 HINT: Determine the concentration at which each of the cations start to precipitate out of solution. >Quantitative precipitation means 1/1000 remains in solution.
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Can cadmium (II), and mercury (II) be separated quantitatively by precipitation as sulfides from a solution that is 0.15 M cadmium nitrate and 0.10 M in mercuric ions?
If possible, what range of sulfide concentration is permissible?
Do you expect any interference from the formation of hydroxides of both heavy metals?
CdS (144.46); Ksp = 1.0 x 10 ^ -27
HgS (232.66); Ksp = 2.0 x 10 ^ -53
HINT: Determine the concentration at which each of the cations start to precipitate out of solution.
>Quantitative precipitation means 1/1000 remains in solution.
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