estion 3 of 8 incorrect IncorrectIncorrect Consider the following qualitative an

Question

estion 3 of 8 incorrect IncorrectIncorrect Consider the following qualitative analysis scenario and then dlassify what type of qualitative analysis principle is being used. A precipitate contains Bi Ss(s) and SbSs(s). The Sb can be separated from the Bi2Sa(s) by adding excess s to form [SbSal (aq). O Selective oxidation/reduction O Amphoteric Precipitate Solubilization O Fractional precipitation O Selective precipitation Competitive equilibrium solubilization: cation complexation Competitive equilibrium solubilization: anion protonation There is a hint available! View the hint by clicking on the

Explanation / Answer

Group II (Cu2+, Bi3+, Cd2+, Hg2+, As3+, Sb3+, Sn4+) can be precipitated by low amounts of sulfide ion; this can be achieved by adding an acidic solution of H2S. H2S will give S2-.

The separation of Sb3+ from Bi2S3 is selective precipitation

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