Water Solubility Chart Of Common Compounds
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1Pierce College
Putman/Chem 100
Water Solubility Chart of Common Compounds
Soluble Compounds (Do not allow double-replacement reactions to occur)
1. Most alkali metal, alkaline earth or ammonium salts.
Examples of soluble salts: NaOH, NaCl, KOH, KCl, NH
OH, NH
Cl
4
4
2. Most acetate or nitrate salts.
Examples of soluble salts: NaC
H
O
, AgNO
2
3
2
3
3. Most sulfate salts EXCEPT those containing lead, strontium or barium. Calcium and silver
sulfate salts are only slightly soluble.
Examples:
Soluble: Na
SO
, MgSO
, FeSO
, CuSO
2
4
4
4
4
Insoluble: Pb(SO
)
, SrSO
, BaSO
4
2
4
4
4. Halide salts EXCEPT those containing silver, mercury or lead.
Examples:
Soluble: NaCl, MgCl
, FeCl
2
2
Insoluble: AgCl, Hg
Cl
, PbCl
2
2
4
Insoluble Compounds (Allow double-replacement reactions to occur)
1. Most oxides and hydroxides are insoluble (will precipitate out of aqueous solution) EXCEPT
for those combined with alkali metals or alkali earth metals.
Examples:
Insoluble: FeO and Fe(OH)
2
Soluble: Na
O, NaOH, MgO and Mg(OH)
2
2
2. Carbonates and phosphates are insoluble (will precipitate out of aqueous solution) EXCEPT
for those combined with alkali metals or ammonium.
Examples:
Insoluble: FeCO
and AlPO
3
4
Soluble: Na
CO
, Na
PO
, (NH
)
CO
and (NH
)
PO
2
3
3
4
4
2
3
4
3
4
3. Sulfides are insoluble (will precipitate out of aqueous solution) EXCEPT for those combined
with alkali metals, alkaline earth metals or ammonium.
Insoluble: CuS, FeS, Al3S2
Soluble: Na
S, K
S, MgS, CaS, (NH
)
S
2
2
4
2
Putman/Pierce College Chem 100 08 08/20100620
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