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Preparation of Salts

 
6.9  Preparations of Salts
 
Definition of Soluble Salts
Salts that dissolve in water at room temperature.
 
Definition of Insoluble Salts
Salts that do not dissolve in water at room temperature. 
 
Solubility of Salts in Water
Types of Salts Soluble in Water Not Soluble in Water

Nitrate salts (\(NO_3\,^-\))

 All nitrate salts None

Sulphate salt (\(SO_4\,^{2-}\))

  All sulphate salts except

Lead(II) sulphate, \(PbSO_4\)

Calcium sulphate, \(CaSO_4\)

Barium sulphate, \(BaSO_4\)

Carbonate salt  (\(CO_3\,^{2-}\))

Potassium carbonate, \(K_2CO_3\)

Sodium carbonate, \(Na_2CO_3\)

Ammonium carbonate,  \((NH_4)_2CO_3\)

 Other carbonate salts
Ammonium, sodium and potassium salts All ammonium, sodium and potassium salts None
 
The diagram shows PREPARATION OF SOLUBLE POTASSIUM AND SODIUM SALTS. 1. Neutralisation through titration method. 2. Evaporation. 3. Recrystallisation.
 
The diagram shows PREPARATION OF SOLUBLE NON-POTASSIUM AND NON-SODIUM SALTS. 1. The reaction of acid with metal oxide, metal hydroxide, evaporation and recrystallisation.
 
The diagram shows the PREPARATION OF INSOLUBLE SALTS. 1. Double decomposition reaction. 2. Filtration. 3. Recrystallisation.
 

 

 

 

 

The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.

Preparation of Salts

 
6.9  Preparations of Salts
 
Definition of Soluble Salts
Salts that dissolve in water at room temperature.
 
Definition of Insoluble Salts
Salts that do not dissolve in water at room temperature. 
 
Solubility of Salts in Water
Types of Salts Soluble in Water Not Soluble in Water

Nitrate salts (\(NO_3\,^-\))

 All nitrate salts None

Sulphate salt (\(SO_4\,^{2-}\))

  All sulphate salts except

Lead(II) sulphate, \(PbSO_4\)

Calcium sulphate, \(CaSO_4\)

Barium sulphate, \(BaSO_4\)

Carbonate salt  (\(CO_3\,^{2-}\))

Potassium carbonate, \(K_2CO_3\)

Sodium carbonate, \(Na_2CO_3\)

Ammonium carbonate,  \((NH_4)_2CO_3\)

 Other carbonate salts
Ammonium, sodium and potassium salts All ammonium, sodium and potassium salts None
 
The diagram shows PREPARATION OF SOLUBLE POTASSIUM AND SODIUM SALTS. 1. Neutralisation through titration method. 2. Evaporation. 3. Recrystallisation.
 
The diagram shows PREPARATION OF SOLUBLE NON-POTASSIUM AND NON-SODIUM SALTS. 1. The reaction of acid with metal oxide, metal hydroxide, evaporation and recrystallisation.
 
The diagram shows the PREPARATION OF INSOLUBLE SALTS. 1. Double decomposition reaction. 2. Filtration. 3. Recrystallisation.
 

 

 

 

 

The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.
Chapter : Acids, Bases and Salts
Topic : Preparation of Salts
Form 4 Chemistry
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