Map a Sapling Learning macmillan learning A solution containing a mixture of met

Question

Map a Sapling Learning macmillan learning A solution containing a mixture of metal cations was treated with dilute HCl and a precipitate formed. The solution was filtered and H2S was bubbled through the acidic solution. A precipitate again formed and was filtered off. Then, the pH was raised to about 8 and H2S was again bubbled through the solution. This time, no precipitate formed. Finally, the solution was treated with a sodium carbonate solution, which resulted in formation of a precipitate. Which metal ions were definitely present, which were definitely absent, and which may or may not have been present in the original mixture? Definitely present Definitely absent Possibly present Cd Ni K* Bi Hg Pb2+ There is a hint available! View the hint bv clicking on the bottom divider bar. Click on the divider bar again to hide the hint Close

Explanation / Answer

Definitely present                Definitely absent                                                         possible present

Ag^+, Hg22+ ,Pb^2+ Hg^2+       Mn^2+ , Cd^2+ ,Ni2+                               K^+

Sb^3+, Bi^3+,Sn^4+ Mg^2+,Ca^2+

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