solubility

Question 1

1. Nitrate rule

Answer 1

Most nitrate (NO3−) salts are soluble.

Question 2

2. Alkali metal rule

Answer 2

Most alkali metal (group 1A) salts and NH4+ are soluble.

Question 3

3. Anion rule

Answer 3

Most Cl−, Br−, and I − salts are soluble (except Ag+ , Pb 2+ ,
Hg2 2+ ).

Question 4

4. Sulfate rule

Answer 4

Most sulfate salts are soluble (except BaSO4, PbSO4, Hg2SO4, CaSO4 )

Question 5

5. Hydroxide rule

Answer 5

Most OH−(hydroxides) are insoluble (NaOH, KOH are soluble

Question 6

6. variety of salts rule

Answer 6

Most S2−(sulfides), CO32−(carbonates), CrO42−(chromates), PO43−(phosphates) salts are insoluble, except for those containing the cations in Rule 2