Precipitation rules

NO3-

All nitrates are soluble

C2H3O2-

All acetates are soluble (AgC2H3O2 only moderately)

Cl-

Br-

SO4 2-

All sulfates are soluble except those of Ba2+

CO3 2- and PO4 3-

All phosphates and carbonates are insoluble except those of Na+

OH-

All hydroxides are insoluble except those of Na+ and K+ (Hydroxides of Ba2+ and Ca2+ are slightly soluble)

S2-

All sulfides are insoluble except those of Na+

Na+

K+

Transition Metal Precipitates

Transition Metal Precipitates are colored

Fluorines

Fluorines are usually soluble except in Pb2+