A solution containing a mixture of metal cations was treated with dilute HCI and no precipitate formed. Next, H₂S was bubbled through the acidic solution. A precipitate formed and was filtered off. Then, the pH was raised to about 8 and H₂S was again bubbled through the solution. A precipitate again formed and was filtered off. Finally, the solution was treated with a sodium. carbonate solution, which resulted in no precipitation. Classify the metal ions based on whether they were definitely present, definitely absent, or whether it is possible they were present in the original mixture. Definitely present Definitely absent Agt Ba2+ Mn²+ Mg²+ Pb²+ Hg W Possibly present Cu²+ Fe²+ Cr³+ Sn+ K* Hg2+ Sb³+

A solution containing a mixture of metal cations was treated with dilute HCI and no precipitate formed. Next, H₂S was bubbled through the acidic solution. A precipitate formed and was filtered off. Then, the pH was raised to about 8 and H₂S was again bubbled through the solution. A precipitate again formed and was filtered off. Finally, the solution was treated with a sodium. carbonate solution, which resulted in no precipitation. Classify the metal ions based on whether they were definitely present, definitely absent, or whether it is possible they were present in the original mixture. Definitely present Definitely absent Agt Ba2+ Mn²+ Mg²+ Pb²+ Hg W Possibly present Cu²+ Fe²+ Cr³+ Sn+ K* Hg2+ Sb³+

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.9QAP

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A solution containing a mixture of metal cations was treated with dilute HClHCl and a precipitate formed. The solution was filtered, and H2SH2S was bubbled through the acidic solution. A precipitate again formed and was filtered off. Then, the pH was raised to about 88 and H2SH2S was again bubbled through the solution. This time, no precipitate formed. Finally, the solution was treated with a sodium carbonate solution, which resulted in the formation of a precipitate. Classify the metal ions based on whether they were definitely present, definitely absent, or whether it was possible they were present in the original mixture.
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