Precipitation Reaction

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9 Terms

1
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What is a precipitation reaction

when two solutions are mixed, an insoluble substance can form called a precipitate which is a solid

2
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How to remember solubility rules/ where to look

1) Alkali Metal row + NH4+

  • Na+, K+, NH4+ = soluble

2) NAP

  • Nitrates, Acetates, Perchlorates = soluble

3) transition metals

  • Ag+, Pb2+, Hg+ = not soluble

4) Fluorine group

  • Chlorides, Bromides, Iodides = soluble

5) COSH

  • Carbonates, Oxides, Sulfides, Hydroxides = not soluble

6) Hydroxides

  • NaOH, KOH, Ca(OH)2 = soluble

7) Sulfates except…

  • CaSO4, PbSO4, and BaSO4,

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Which salts are soluble?

Na+, K+, NH4+

4
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Which polyatomic ions are soluble (NAP)

Nitrates (NO3)-, Acetates (C2H3O2)-, and Perchlorates (ClO4)-

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Which transition metals are not soluble?

Ag+, Pb+2, and Hg+

6
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Which ions in the Fluoride group are soluble?

Cl-, Br-, I-

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Which monatomic and polyatomic ions are not soluble?

Carbonates (CO3-2), Oxides (O-2), Sulfides (S-2), and Hydroxides (OH-)

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Which Hydroxides are Soluble

NaOH, KOH, and Ca(OH)2

9
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Sulfates solubility

soluble except for CaSO4 , PbSO4, and BaSO4