Most chlorides are soluble in water. Give all of the formulae for the insoluble chlorides.

To determine which chlorides are insoluble in water, we need to refer to solubility rules or solubility tables. There are several common insoluble chlorides that we can identify using these rules. Here are some of the formulae for insoluble chlorides:

- Silver chloride (AgCl)
- Lead(II) chloride (PbCl2)
- Mercury(I) chloride (Hg2Cl2)
- Lead(IV) chloride (PbCl4)
- Silver chromate (Ag2CrO4)
- Mercury(II) chloride (HgCl2)
- Copper(I) chloride (CuCl)
- Mercury(I) bromide (Hg2Br2)

These are just a few examples of insoluble chlorides. Keep in mind that solubility can also depend on factors such as temperature, pH, and the presence of other ions that may form complex compounds. Always consult a solubility table or reference for accurate information on solubility.