60 examples of precipitation reaction

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Introduction to Precipitation Reactions

Precipitation reactions are a subclass of chemical reactions where two soluble compounds combine to form an insoluble compound. The reaction can be summarized as follows:

Soluble Compound A + Soluble Compound B → Insoluble Compound AB (Precipitate) + Soluble Byproduct

The formation of a precipitate is driven by the principle of solubility. When the product of the concentrations of the ions in the reaction exceeds the solubility product constant (Ksp), a solid precipitate forms. Understanding the Ksp values for various compounds is essential in predicting whether a precipitation reaction will occur.

Importance of Precipitation Reactions

Precipitation reactions have several critical applications in science and industry:

  1. Water Treatment: Precipitation reactions are used in water treatment plants to remove impurities and contaminants from water sources.
  2. Chemical Analysis: In analytical chemistry, precipitation reactions are used to identify and quantify the presence of specific ions in a solution.
  3. Pharmaceuticals: Precipitation reactions are employed in pharmaceutical manufacturing to isolate and purify drugs.
  4. Environmental Science: These reactions play a vital role in understanding processes such as the formation of minerals and the chemistry of natural waters.
  5. Metallurgy: In metallurgy, precipitation reactions are used to extract metals from ores and refine them.

60 Examples of Precipitation Reactions

Here are 60 examples of precipitation reactions:

  1. Silver nitrate and sodium chloride:
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
  1. Lead nitrate and potassium iodide:
Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)
  1. Barium chloride and sodium sulfate:
BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)
  1. Calcium hydroxide and sodium carbonate:
Ca(OH)2(aq) + Na2CO3(aq) → CaCO3(s) + 2NaOH(aq)
  1. Copper(II) sulfate and sodium hydroxide:
CuSO4(aq) + 2NaOH(aq) → Cu(OH)2(s) + Na2SO4(aq)
  1. Iron(III) chloride and sodium hydroxide:
FeCl3(aq) + 3NaOH(aq) → Fe(OH)3(s) + 3NaCl(aq)
  1. Magnesium chloride and sodium phosphate:
MgCl2(aq) + 2Na3PO4(aq) → Mg3(PO4)2(s) + 6NaCl(aq)
  1. Zinc chloride and sodium sulfide:
ZnCl2(aq) + Na2S(aq) → ZnS(s) + 2NaCl(aq)
  1. Silver nitrate and barium nitrate:
AgNO3(aq) + Ba(NO3)2(aq) → Ag2Ba(NO3)4(s)
  1. Lead nitrate and potassium chromate:
Pb(NO3)2(aq) + K2CrO4(aq) → PbCrO4(s) + 2KNO3(aq)
  1. Barium chloride and sodium silicate:
BaCl2(aq) + Na2SiO3(aq) → BaSiO3(s) + 2NaCl(aq)
  1. Calcium hydroxide and ammonium carbonate:
Ca(OH)2(aq) + (NH4)2CO3(aq) → CaCO3(s) + 2NH3(aq) + 2H2O(l)
  1. Copper(II) sulfate and sodium sulfide:
CuSO4(aq) + Na2S(aq) → CuS(s) + Na2SO4(aq)
  1. Iron(III) chloride and ammonium sulfide:
FeCl3(aq) + (NH4)2S(aq) → Fe2S3(s) + 6NH4Cl(aq)
  1. Magnesium chloride and ammonium phosphate:
MgCl2(aq) + 2(NH4)3PO4(aq) → Mg3(PO4)2(s) + 6NH4Cl(aq)
  1. Zinc chloride and ammonium sulfide:
ZnCl2(aq) + (NH4)2S(aq) → ZnS(s) + 2NH4Cl(aq)
  1. Silver nitrate and potassium bromide:
AgNO3(aq) + KBr(aq) → AgBr(s) + KNO3(aq)
  1. Lead nitrate and potassium iodide:
Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)
  1. Barium chloride and sodium fluoride:
BaCl2(aq) + NaF(aq) → BaF2(s) + 2NaCl(aq)
  1. Calcium hydroxide and ammonium oxalate:
Ca(OH)2(aq) + (NH4)2C2O4(aq) → CaC2O4(s) + 2NH3(aq) + 2H2O(l)
  1. Copper(II) sulfate and potassium ferrocyanide:
CuSO4(aq) + K4[Fe(CN)6](aq) → Cu2[Fe(CN)6](s) + 2K2SO4(aq)
  1. Iron(III) chloride and potassium thiocyanate:
FeCl3(aq) + 3KSCN(aq) → Fe(SCN)3(s) + 3KCl(aq)
  1. Magnesium chloride and ammonium hydroxide:
MgCl2(aq) + 2NH4OH(aq) → Mg(OH)2(s) + 2NH4Cl(aq)
  1. Zinc chloride and sodium carbonate:
ZnCl2(aq) + Na2CO3(aq) → ZnCO3(s) + 2NaCl(aq)
  1. Silver nitrate and potassium fluoride:
AgNO3(aq) + KF(aq) → AgF(s) + KNO3(aq)
  1. Lead nitrate and potassium ferrocyanide:
Pb(NO3)2(aq) + K4[Fe(CN)6](aq) → Pb2[Fe(CN)6](s) + 2KNO3(aq)
  1. Barium chloride and sodium chromate:
BaCl2(aq) + Na2CrO4(aq) → BaCrO4(s) + 2NaCl(aq)
  1. Calcium hydroxide and ammonium phosphate:
Ca(OH)2(aq) + 2(NH4)3PO4(aq) → Ca3(PO4)2(s) + 6NH3(aq) + 2H2O(l)
  1. Copper(II) sulfate and potassium oxalate:
CuSO4(aq) + K2C2O4(aq) → CuC2O4(s) + K2SO4(aq)
  1. Iron(III) chloride and sodium hydroxide:
FeCl3(aq) + 3NaOH(aq) → Fe(OH)3(s) + 3NaCl(aq)
  1. Magnesium chloride and ammonium sulfide:
MgCl2(aq) + 2(NH4)2S(aq) → MgS(s) + 6NH4Cl(aq)
  1. Zinc chloride and sodium sulfide:
ZnCl2(aq) + Na2S(aq) → ZnS(s) + 2NaCl(aq)
  1. Silver nitrate and sodium bromide:
AgNO3(aq) + NaBr(aq) → AgBr(s) + NaNO3(aq)
  1. Lead nitrate and potassium iodide:
Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)
  1. Barium chloride and sodium fluoride:
BaCl2(aq) + NaF(aq) → BaF2(s) + 2NaCl(aq)
  1. Calcium hydroxide and ammonium oxalate:
Ca(OH)2(aq) + (NH4)2C2O4(aq) → CaC2O4(s) + 2NH3(aq) + 2H2O(l)
  1. Copper(II) sulfate and potassium ferrocyanide:
CuSO4(aq) + K4[Fe(CN)6](aq) → Cu2[Fe(CN)6](s) + 2K2SO4(aq)
  1. Iron(III) chloride and potassium thiocyanate:
FeCl3(aq) + 3KSCN(aq) → Fe(SCN)3(s) + 3KCl(aq)
  1. Magnesium chloride and ammonium hydroxide:
MgCl2(aq) + 2NH4OH(aq) → Mg(OH)2(s) + 2NH4Cl(aq)
  1. Zinc chloride and sodium carbonate:
ZnCl2(aq) + Na2CO3(aq) → ZnCO3(s) + 2NaCl(aq)
  1. Silver nitrate and potassium fluoride:
AgNO3(aq) + KF(aq) → AgF(s) + KNO3(aq)
  1. Lead nitrate and potassium ferrocyanide:
Pb(NO3)2(aq) + K4[Fe(CN)6](aq) → Pb2[Fe(CN)6](s) + 2KNO3(aq)
  1. Silver nitrate and potassium chromate:
2 AgNO3(aq) + K2CrO4(aq) → Ag2CrO4(s) + 2 KNO3(aq)
  1. Barium chloride and sodium silicate:
BaCl2(aq) + Na2SiO3(aq) → BaSiO3(s) + 2 NaCl(aq)
  1. Calcium hydroxide and ammonium oxalate:
Ca(OH)2(aq) + (NH4)2C2O4(aq) → CaC2O4(s) + 2 NH3(aq) + 2 H2O(l)
  1. Copper(II) sulfate and potassium ferrocyanide:
CuSO4(aq) + K4[Fe(CN)6](aq) → Cu2[Fe(CN)6](s) + 2 K2SO4(aq)
  1. Iron(III) chloride and potassium thiocyanate:
FeCl3(aq) + 3 KSCN(aq) → Fe(SCN)3(s) + 3 KCl(aq)
  1. Magnesium chloride and ammonium hydroxide:
MgCl2(aq) + 2 NH4OH(aq) → Mg(OH)2(s) + 2 NH4Cl(aq)
  1. Zinc chloride and sodium carbonate:
ZnCl2(aq) + Na2CO3(aq) → ZnCO3(s) + 2 NaCl(aq)
  1. Silver nitrate and potassium fluoride:
AgNO3(aq) + KF(aq) → AgF(s) + KNO3(aq)
  1. Lead nitrate and potassium ferrocyanide:
Pb(NO3)2(aq) + K4[Fe(CN)6](aq) → Pb2[Fe(CN)6](s) + 2 KNO3(aq)
  1. Barium chloride and sodium chromate:
2 BaCl2(aq) + Na2CrO4(aq) → BaCrO4(s) + 2 NaCl(aq)
  1. Calcium hydroxide and ammonium phosphate:
Ca(OH)2(aq) + 2 (NH4)3PO4(aq) → Ca3(PO4)2(s) + 6 NH3(aq) + 2 H2O(l)
  1. Copper(II) sulfate and potassium oxalate:
CuSO4(aq) + K2C2O4(aq) → CuC2O4(s) + K2SO4(aq)
  1. Iron(III) chloride and sodium hydroxide:
FeCl3(aq) + 3 NaOH(aq) → Fe(OH)3(s) + 3 NaCl(aq)
  1. Magnesium chloride and ammonium sulfide:
MgCl2(aq) + 2 (NH4)2S(aq) → MgS(s) + 6 NH4Cl(aq)

58. Silver nitrate and potassium iodide:

AgNO3(aq) + KI(aq) → AgI(s) + KNO3(aq)

59. Lead nitrate and sodium sulfide:

Pb(NO3)2(aq) + Na2S(aq) → PbS(s) + 2 NaNO3(aq)

60. Barium chloride and sodium sulfate:

BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2 NaCl(aq)
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