simple rules for the solubility of salts in water

table 4.1

rule 1

most nitrate salts are soluble

rule 2

most salts containing the alkali metal ions Li(+), Na(+), K(+), Cs(+), Rb(+) and the ammonium ion are soluble

rule 3

most chloride, bromide, and iodide salts are soluble. notable exceptions are salts containing the ions Ag(+), Pb(2+), and Hg2(2+)

rule 4

most sulfate salts are soluble. notable exceptions are BaSO4, PbSO4, Hg2SO4, and CaSO4

rule 5

most hydroxides are only slightly soluble. The important soluble hydroxides are NaOH and KOH. The compounds Ba(OH)2, Sr(OH)2, and Ca(OH)2 are marginally soluble

rule 6

most sulfide, carbonate, chromate, and phosphate salts are only slightly soluble, except for those containing the cations in Rule 2