General Properties of Salts


 
 
Concept Explanation
 

General Properties of Salts

Properties of Salts:

  • Melting and boiling points: salts are mostly solid which melt as well as boil at high temperature.
  • Solubility in water: salts are soluble in water. Eg: sodium chloride, potassium sulphate, lead chloride, copper carbonate etc are soluble in water.
  • Water of crystallization: salts are found as crystals with water molecules present in them. This water is called water of crystallization and such salts are called hydrated salts. E.g.: copper sulphate CuSO_4.5H_2O.  On heating, hydrated salts lose their water of crystallization, crystals lose their shape, color and change to a powdery substance. The hydrated salt that have lost their water of crystallization are called anhydrous salts.
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    Sample Questions
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    Question : 1

    Hydrated salts are found as crystals with water molecules present in them. This water is called _______________ .

    Right Option : A
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    Question : 2

    Which of the following are correct :

    (a) Salts are mostly solid which melt as well as boil at high temperature.

    (b) Sodium chloride, potassium sulphate, lead chloride, copper carbonate etc are insoluble in water.

    (c) The crystals of some salts have a fixed number of water molecules called water of crystallization.

    Right Option : C
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    Question : 3

    Common name of copper sulphate is ________________________

    Right Option : D
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