Suppose you have a solution that might contain any or all of the following catio

Question

Suppose you have a solution that might contain any or all of the following cations: Ag , Ba , and Fe . + 2+ 3+
2 4 When excess HCl is added to this solution a precipitate forms. This precipitate is removed and excess H SO is
then added to the solution which forms a precipitate. This precipitate is removed and excess NaOH is added to
the supernatant until the solution is strongly basic. The addition of the NaOH does not produce a precipitate.
What is the chemical formula of each precipitate? Which of the 3 possible metal cation(s) were not present in
the original solution? (explain)
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Explanation / Answer

AgCl(ppt) BaSO4 (ppt) & Fe(OH)2 Fe3+ was not present as there is no reaction that can define its presence

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