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A solution containing 0.10 M Zn2+ and 0.10 M Fe2+ is saturated with H2S (i.e. 0.10...

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Chemistry

A solution containing 0.10 M Zn2+ and 0.10 MFe2+ is saturated with H2S (i.e. 0.10 MH2S). (a) What must the H+ concentration be to separatethese ions by selectively precipitating ZnS? Note: ZnS hasKsp=1.2x10-23; FeS has Ksp=3.7x10-19. (b)What is the smallest concentration of Zn2+ that can beachieved without precipitating any of the Fe2+ asFeS?

Answer & Explanation Solved by verified expert
4.3 Ratings (790 Votes)
Given Zn2 01M Fe2 01M H2S 01M Ksp for ZnS 121023 Ksp for FeS 37 1019 aIn order to precipitate ZnS only not FeS the ionic product of FeS must be smaller than Ksp of FeS ie For FeS Kip Ksp for FeS not to be    See Answer
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