A solution containing a mixture of metal cations was treated as outlined. 1. Dilute HCI was added and a precipitate formed. The precipitate was filtered off. 2. H₂S was bubbled through the acidic solution. No precipitate formed. 3. The pH was raised to about 9 and H₂S was again bubbled through the solution. A precipitate formed and was filtered off. 4. Finally, sodium carbonate was added to the filtered solution and no precipitate formed. What can be said about the presence of each of these groups of cations in the original solution? Cation group Ag+, Pb²+, Hg2+ Bi³ +, Cd²+, Cu²+, Hg²+, Pb²+, Sb³ +, Sn²+, Sn4 + Al³+, Co²+, Cr³+, Fe²+, Fe³+, Ni²+, Mn²+, Zn²+ Ba²+, Ca²+, Mg²+, Sr² + Li+, Na+, K+, NH At least one of these ions was present. Description form insoluble chlorides form acid-insoluble sulfides form base-insoluble sulfides or hydroxides form insoluble carbonates completely soluble Answer Bank All of these ions were present. Present in the original solution? At least one of these ions was present. None of these ions were present. At least one of these ions was present. At least one of these ions was present. unknown None of these ions were present. unknown
A solution containing a mixture of metal cations was treated as outlined. 1. Dilute HCI was added and a precipitate formed. The precipitate was filtered off. 2. H₂S was bubbled through the acidic solution. No precipitate formed. 3. The pH was raised to about 9 and H₂S was again bubbled through the solution. A precipitate formed and was filtered off. 4. Finally, sodium carbonate was added to the filtered solution and no precipitate formed. What can be said about the presence of each of these groups of cations in the original solution? Cation group Ag+, Pb²+, Hg2+ Bi³ +, Cd²+, Cu²+, Hg²+, Pb²+, Sb³ +, Sn²+, Sn4 + Al³+, Co²+, Cr³+, Fe²+, Fe³+, Ni²+, Mn²+, Zn²+ Ba²+, Ca²+, Mg²+, Sr² + Li+, Na+, K+, NH At least one of these ions was present. Description form insoluble chlorides form acid-insoluble sulfides form base-insoluble sulfides or hydroxides form insoluble carbonates completely soluble Answer Bank All of these ions were present. Present in the original solution? At least one of these ions was present. None of these ions were present. At least one of these ions was present. At least one of these ions was present. unknown None of these ions were present. unknown
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A solution containing a mixture of metal cations was treated as outlined.
- Dilute HClHCl was added and a precipitate formed. The precipitate was filtered off.
- H2SH2S was bubbled through the acidic solution. No precipitate formed.
- The pH was raised to about 9 and H2SH2S was again bubbled through the solution. A precipitate formed and was filtered off.
- Finally, sodium carbonate was added to the filtered solution and no precipitate formed.
What can be said about the presence of each of these groups of cations in the original solution?
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