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15 Nov 2019
A solution containing a mixture of metal cations was treated as follows 1. Dilute HCI was added and a precipitate formed. The precipitate was filtered off 2. H2S was bubbled through the acidic solution. Again, a precipitate formed and was filtered off 3. The pH was raised to about 9 and H2S was again bubbled through the solution. No precipitate formed 4. Finally, sodium carbonate was added. A precipitate formed and was filtered off What can be said about the presence of each of these groups of cations in the original solution? Cation Group Description form insoluble chlorides Present in the original solution? Bi3+ Cd2+ Cu2+ Ha?+ |form acid-insoluble Bi3", Cd, Cu, Pb2, Sb3, Sn2 Sn Al3+, Co2, Cr3+, Fe2 sulfides form base-insoluble 3t Ni2+ ,2+ ,2+ | sulfides or hydroxides Ba2+, Ca2, Mg2+, Sr2 formnsoluble carbonates Li, Nat, K, NH4 completely soluble None of these ions were present. unknown All of these ions were present. At least one of these ions was present.
A solution containing a mixture of metal cations was treated as follows 1. Dilute HCI was added and a precipitate formed. The precipitate was filtered off 2. H2S was bubbled through the acidic solution. Again, a precipitate formed and was filtered off 3. The pH was raised to about 9 and H2S was again bubbled through the solution. No precipitate formed 4. Finally, sodium carbonate was added. A precipitate formed and was filtered off What can be said about the presence of each of these groups of cations in the original solution? Cation Group Description form insoluble chlorides Present in the original solution? Bi3+ Cd2+ Cu2+ Ha?+ |form acid-insoluble Bi3", Cd, Cu, Pb2, Sb3, Sn2 Sn Al3+, Co2, Cr3+, Fe2 sulfides form base-insoluble 3t Ni2+ ,2+ ,2+ | sulfides or hydroxides Ba2+, Ca2, Mg2+, Sr2 formnsoluble carbonates Li, Nat, K, NH4 completely soluble None of these ions were present. unknown All of these ions were present. At least one of these ions was present.
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shitalbhusare12Lv10
24 Mar 2022
Nelly StrackeLv2
6 Mar 2019
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