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Question

Give an example of a hygroscopic substance.


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Solution

Hygroscopic substances:

  • The absorption and adsorption of water from the surrounding environment by the matter is called hygroscopy.
  • The substances which cause the hygroscopic effect are called hygroscopic substances.
  • Heating can remove absorbed water.
  • Examples of hygroscopic compounds are sodium chloride NaCl, calcium chloride CaCl2, zinc chloride ZnCl2, calcium oxide CaO - commonly called quick lime.

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