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: nickel(II) ion, silver ion, barium ion, and manganese(II) ion. Addition of hydrobromic acid causes a precipitate to form. After filtering off the precipitate, sulfuric acid is added to the resultant solution and another precipitate forms. This is filtered off, and a solution of sodium hydroxide is added to the resulting solution. No precipitate is observed.

1-Which cation is present in the first precipitate? Express your answer as an ion. If there is more than one answer, separate them by a comma.

2-Which cation is present in the second precipitate? Express your answer as an ion. If there is more than one answer, separate them by a comma.

Explanation / Answer

1)

Silver cation is present in the first precipitate

2)

Calcium ion is present in the second precipitate

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