APCHEM solubility rules

Six Strong Acids (Br, I, NO3, SO4, CIO4, CL) are completely

soluble ( meaning they break apart into ions.) (others are only partially soluble)

Six strong acids

HBr, HI, HNO3, H2SO4, HCLIO4, HCL

The strong bases are

Group 1 & 2 hydroxides

The 7 strong bases are

completely soluble (others are only partially.)

7 strong bases

LiOH, NaOH, KOH, RbOH, CsOH, Sr(OH)2, Ba(OH)2

All the compounds with nitrate (NO3(-)), acetate (C2H302(-)), and chlorate (CIO4(-)) are

soluble in water

All the compounds with group one cations are

soluble in water

All the compounds with NH4(+) are

soluble in water

Halides (group 17)

(F-, CL-, Br-, I-)

group 17 is soluble in water except for ones with

Ag+, Pb(2+), Hg(2+)

Sulfates are soluble except

Ag+, Pb(2+), Hg(2+), Ca(2+), Sr(2+), Ba(2+)

Phosphates (PO4(3-) & carbonates (CO3(2-) are

insoluble unless if they contain a group 1 cation or NH4(+)

Sulfides (S(2-) are

insoluble unless they have group 1 cations, group 2 cations, or NH4(+)