Question: A solution is 1.8 10-4 M Co2+ and 0.20 M HSO4. The solution also contains Na2SO4. What should be the minimum molarity of Na2SO4

A solution is 1.8 × 10-4 M Co2+ and 0.20 M HSO4. The solution also contains Na2SO4. What should be the minimum molarity of Na2SO4 to prevent the precipitation of cobalt(II) sulfide when the solution is saturated with hydrogen sulfide (0.10 M H2S)?

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Using the K sp of 4 x 10 21 for CoS calculate the S 2 needed to maintain a saturated solu... View full answer

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