Question

Question #e0ade

Answer 1

Here are the procedures I devised.

Explanation:

They use the following (limited) solubility rules:

1. Salts containing Group 1 cations are soluble.
2. Salts containing nitrate ion (`"NO"_3^"-"`) are soluble.
3. Salts containing chloride ion `"Cl"^"-"` are soluble, except for `"AgCl"`.
4. Sulfides of transition metals are insoluble.
5. Group 2 carbonates are insoluble.
6. Phosphates such as `"Ca"_3("PO"_4)_2` are insoluble.

a. `"Cl"^"-"` and `"PO"_4^"3-"`

1. Add a solution of calcium nitrate.
2. Remove the precipitate of calcium phosphate.
3. Add a solution of silver nitrate.
4. A precipitate of silver chloride forms.

b. `"Ca"^"2+"` and `"Ag"^"+"`

1. Add a solution of sodium chloride.
2. Remove the precipitate of silver chloride.
3. Add a solution of sodium carbonate.
4. A precipitate of calcium carbonate forms.

c. `"Cu"^"2+"` and `"Ca"^"2+"`

1. Add a solution of sodium sulfide.
2. Remove the precipitate of copper(II) sulfide.
3. Add a solution of sodium carbonate.
4. A precipitate of calcium carbonate forms.