Which calcium salts precipitate?

Calcium carbonate

Calcium Sulphate

Calcium phosphate

Calcium chloride/halogens & Calcium nitrates remain in solution.

Remember

1. Carbonates, sulphates and phosphates precipitate , or are very sparingly soluble.

2. All nitrates and halogen salts are soluble.

3. All Group (I) metal ( Alkali metals) salts are soluble.