Interactions | Reactions | Processes

Classified as: Precipitation

A precipitate occurs when the solution exceeds its solubility product.
Cu(NO3)2
  +  
2
NaOH
  +  
H2O
         
Cu(OH)2
  +  
2
NaNO3

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  +  
         
  +  

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Ca2+
  +  
2
[OH]–
  +  
CO2
  +  
H2O
         
CaCO3
  +  
H2O

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CaSO4
  +  
Na2CO3
  +  
H2O
         
CaCO3
  +  
Na2SO4

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Ca2+
  +  
2
[HCO3]–
  +  
Ca(OH)2
         
2
CaCO3
  +  
2
H2O

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SiCl4
  +  
4
H2O
         
Si(OH)4
  +  
4
HCl

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Al2(SO4)3
  +  
6
H2O
         
2
Al(OH)3
  +  
3
H2SO4

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H2O
  +  
FeSO4Cl
  +  
3
H2O
         
H2O
  +  
Fe(OH)3
  +  
H2SO4
  +  
HCl

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H2O
  +  
Fe2(SO4)3
.5H2O
  +  
6
H2O
         
H2O
  +  
2
Fe(OH)3
  +  
3
H2SO4

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Ca(HCO3)2
  +  
H2O
         
CaCO3
  +  
CO2
  +  
H2O

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Ca(HCO3)2
  +  
Ca(OH)2
  +  
H2O
         
2
CaCO3
  +  
2
H2O

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3
SiF4
  +  
2
H2O
         
2
H2SiF6(aq)
  +  
SiO2

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BaS
  +  
CO2
  +  
H2O
         
BaCO3
  +  
H2S

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2
NaN3
  +  
Pb(NO3)2
  +  
H2O
         
Pb(N3)2
  +  
2
NaNO3

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AgNO3
  +  
HCl(aq)
  +  
H2O
         
AgCl
  +  
HNO3(aq)

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  +  
Fehling's
Solution
         
  +  
Cu2O

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  +  
Tollens'
Reagent
         
  +  
Ag

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[Fe(H2O)6]2+
  +  
2
NaOH(aq)
         

Fe(H2O)4(OH)2
Fe(OH)2
  +  
2
Na+
  +  
2
H2O

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[Fe(H2O)6]2+
  +  
6
NaOH(aq)
         

Fe(H2O)4(OH)2
Fe(OH)2
  +  
2
Na+
  +  
2
H2O
  +  
4
NaOH(aq)

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[Fe(H2O)6]2+
  +  
2
NH3(aq)
         

Fe(H2O)4(OH)2
Fe(OH)2
  +  
2
[NH4]+

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[Fe(H2O)6]2+
  +  
2
NH3(aq)
         

Fe(H2O)4(OH)2
Fe(OH)2
  +  
2
[NH4]+

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[Fe(H2O)6]2+
  +  
[CO3]2–
         
FeCO3
  +  
6
H2O

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[Co(H2O)6]2+
  +  
2
NaOH(aq)
         

Co(H2O)4(OH)2
Co(OH)2
  +  
2
Na+
  +  
2
H2O

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[Co(H2O)6]2+
  +  
6
NaOH(aq)
         

Co(H2O)4(OH)2
Co(OH)2
  +  
2
Na+
  +  
2
H2O
  +  
4
NaOH(aq)

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[Co(H2O)6]2+
  +  
2
NH3(aq)
         

Co(H2O)4(OH)2
Co(OH)2
  +  
2
[NH4]+

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[Co(H2O)6]2+
  +  
[CO3]2–
         

CoCO3
  +  
6
H2O

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[Cu(H2O)6]2+
  +  
2
NaOH(aq)
         

Cu(H2O)4(OH)2
Cu(OH)2
  +  
2
Na+
  +  
2
H2O

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[Cu(H2O)6]2+
  +  
6
NaOH(aq)
         

Cu(H2O)4(OH)2
Cu(OH)2
  +  
2
H2O
  +  
2
Na+
  +  
4
NaOH(aq)

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[Cu(H2O)6]2+
  +  
2
NH3(aq)
         

Cu(H2O)4(OH)2
Cu(OH)2
  +  
2
[NH4]+

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[Cu(H2O)6]2+
  +  
[CO3]2–
         
CuCO3
(unknown)
  +  
6
H2O

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[Fe(H2O)6]3+
  +  
3
NaOH(aq)
         

Fe(H2O)3(OH)3
Fe(OH)3
  +  
3
H2O
  +  
3
Na+

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[Fe(H2O)6]3+
  +  
6
NaOH(aq)
         

Fe(H2O)3(OH)3
Fe(OH)3
  +  
3
H2O
  +  
3
Na+
  +  
3
NaOH(aq)

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[Fe(H2O)6]3+
  +  
3
NH3(aq)
         

Fe(H2O)3(OH)3
Fe(OH)3
  +  
3
[NH4]+

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[Fe(H2O)6]3+
  +  
6
NH3(aq)
         

Fe(H2O)3(OH)3
Fe(OH)3
  +  
3
[NH4]+
  +  
3
NH3

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2

[Fe(H2O)6]3+
  +  
3
[CO3]2–
         
2

Fe(H2O)3(OH)3
Fe(OH)3
  +  
3
CO2
  +  
3
H2O

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[Al(H2O)6]3+
  +  
3
NaOH(aq)
         
Al(H2O)3(OH)3
Al(OH)3
  +  
3
H2O
  +  
3
Na+

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[Al(H2O)6]3+
  +  
4
NaOH(aq)
         
[Al(OH)4]–
  +  
4
Na+
  +  
6
H2O

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[Al(H2O)6]3+
  +  
3
NH3(aq)
         
Al(H2O)3(OH)3
Al(OH)3
  +  
3
[NH4]+

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[Al(H2O)6]3+
  +  
6
NH3(aq)
         
Al(H2O)3(OH)3
Al(OH)3
  +  
3
[NH4]+
  +  
3
NH3

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2
[Al(H2O)6]3+
  +  
3
[CO3]2–
         
2
Al(H2O)3(OH)3
Al(OH)3
  +  
3
CO2
  +  
3
H2O

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[Cr(H2O)6]2+
  +  
3
NaOH(aq)
         

Cr(H2O)3(OH)3
Cr(OH)3
  +  
3
Na+
  +  
3
H2O

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[Cr(H2O)6]2+
  +  
3
NH3(aq)
         

Cr(H2O)3(OH)3
Cr(OH)3
  +  
3
[NH4]+

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2

[Cr(H2O)6]2+
  +  
3
[CO3]2–
         
2

Cr(H2O)3(OH)3
Cr(OH)3
  +  
3
CO2
  +  
3
H2O

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[Ag(NH3)2]+
  +  
NaBr
  +  
H2O
         
AgBr
  +  
2
NH3
  +  
Na+

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[CuCl4]3–
  +  
H2O
         
CuCl
  +  
3
Cl–

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Ca(OH)2(aq)
  +  
CO2
         
CaCO3
  +  
H2O

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Ba2+
  +  
[SO4]2–
  +  
H2O
         
BaSO4

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BaCl2
  +  
H2SO4(aq)
  +  
H2O
         
BaSO4
  +  
2
HCl

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Ba(OH)2
  +  
Na2SO4
  +  
H2O
         
BaSO4
  +  
2
NaOH

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BeCl2
  +  
2
NaOH(aq)
  +  
H2O
         
Be(OH)2
  +  
2
NaCl

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MgCl2
  +  
2
NaOH(aq)
  +  
H2O
         
Mg(OH)2
  +  
2
NaCl

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BeCl2
  +  
4
NaOH(aq)
  +  
H2O
         
[Be(OH)4]2–
  +  
4
Na+
  +  
2
Cl–

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GeCl4
  +  
2
H2O
         
GeO2
  +  
4
HCl

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Be2+
  +  
2
[OH]–
  +  
H2O
         
Be(OH)2

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Al2O3.2H2O
(+Fe, Ti oxides)
         
Al2O3

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Ag+
  +  
[NO3]–
  +  
Na+
  +  
Cl–
  +  
H2O
          
AgCl
  +  
Na+
  +  
[NO3]–

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Ag+
  +  
[NO3]–
  +  
Na+
  +  
Br–
  +  
H2O
          
AgBr
  +  
Na+
  +  
[NO3]–

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Ag+
  +  
[NO3]–
  +  
Na+
  +  
I–
  +  
H2O
          
AgI
  +  
Na+
  +  
[NO3]–

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2
AgNO3
  +  
Zn
  +  
H2O
         
2
Ag
  +  
Zn(NO3)2

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2
Ag+
  +  
Zn
  +  
H2O
         
2
Ag
  +  
Zn2+

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2
AgNO3
  +  
Na2CO3
  +  
H2O
         
Ag2CO3
  +  
2
NaNO3

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2
Ag+
  +  
2
[NO3]–
  +  
2
Na+
  +  
[CO3]2–
  +  
H2O
          
Ag2CO3
  +  
2
Na+
  +  
2
[NO3]–

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Ag+
  +  
[NO3]–
  +  
K+
  +  
Br–
  +  
H2O
          
AgBr
  +  
K+
  +  
[NO3]–

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Ag+
  +  
Br–
  +  
H2O
         
AgBr

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Ag+
  +  
Cl–
  +  
H2O
         
AgCl

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  +  
Fehling's
Solution
         
  +  
Cu2O

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  +  
Tollens'
Reagent
         
  +  
Ag

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FeSO4.7H2O
  +  
Ba(NO3)2
  +  
H2O
         
BaSO4
  +  
Fe2+
  +  
2
[NO3]–
  +  
7
H2O

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CaBr2
  +  
2
AgNO3
  +  
H2O
         
2
AgBr
  +  
Ca2+
  +  
2
[NO3]–

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[CoCl4]2–
  +  
4
AgNO3
  +  
H2O
         
4
AgCl
  +  
Co2+
  +  
4
[NO3]–

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CH3COCl
  +  
AgNO3
  +  
H2O
         
AgCl
  +  
CH3COOH
  +  
H+
  +  
[NO3]–

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[(CH3)4N]+
  +  
I–
  +  
AgNO3
  +  
H2O
         
AgI
  +  
[(CH3)4N]+
  +  
[NO3]–

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BaCl2
  +  
2
AgNO3
  +  
H2O
         
2
AgCl
  +  
Ba2+
  +  
2
[NO3]–

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BaCl2
  +  
H2SO4(aq)
  +  
H2O
         
BaSO4
  +  
2
HCl

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BaCl2
  +  
Na2SO4
  +  
H2O
         
BaSO4
  +  
2
NaCl

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2
Cu2+
  +  
4
I–
  +  
H2O
         
2
CuI
  +  
I2

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[CrO4]2–
  +  
2
AgNO3
  +  
H2O
         
Ag2CrO4
  +  
2
[NO3]–

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© Mark R. Leach 1999 –

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