Report Sheet: Solubility of Metal Salts

1. 
   Write molecular chemical equations for 2 sulfide compounds that precipitated.
   

2)

Carbonates (CO₃^-2)

2. 
   Write molecular chemical equations for 2 carbonate compounds that precipitated.
   

2)

Sulfates (SO₄^-2)

3. 
   Write molecular chemical equations for 2 sulfate compounds that precipitated.
   

2)

Thiocyanates (SCN^-)

4. 
   Write molecular chemical equations for 2 thiocyanate compounds that precipitated.
   

2)

5. 
   Write molecular chemical equations for 2 hydroxide compounds that precipitated.
   

2)

Solubility rules based on your observations in this lab:

These cations never form a precipitate: ________________________________

These anions always form a precipitate: ____________________________________

1. 
   How would you tell another student how to decide whether a precipitate has formed when two solutions are mixed?
   
2. 
   Could potassium salts be substituted as the carriers of the anions?