Solubility Rules Mastery

NO3-

all soluble

C2H2O2-

all soluble except Ag

ClO3-

all soluble

Cl-

all soluble except Ag, Hg2, Pb

Br-

all soluble except Ag, Hg, Hg2, Pb

I-

all soluble except Ag, Hg, Hg2, Pb

SO4-2

all soluble except Sr, Ba, Ca, Hg, Pb, Ag

F-

all soluble except Sr, Ba, Ca, Mg, Mn

Strong acids

soluble - Br, Cl, I, and O's have to exceed H's by 2 or more

Group 1 (alkali metals)

all soluble

NH4+

all soluble

Weak acids

insoluble

CO3-2

all insoluble except group 1 and NH4+

CrO4-2

all insoluble except group 1, NH4+, Ca, Sr

OH-

all insoluble except group 1 and Sr, Ba, Ca

PO4-3

all insoluble except group 1 and NH4+

SO3-2

all insoluble except group 1 and NH4+

S-2

all insoluble except group 1, group 2, and NH4+

CO2 plus any acid (carbonate)

forms CO2, H20, and salt

SO2 plus acid (sulfite)

SO2, H20, and salt

NH3 plus any hydroxide (any ammonium salt)

NH3, H20, and salt

Gases

keep in molecular form don't dissociate

Oxides

don't dissociate except those containing group 1 metals