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what is the difference between efflorescence …

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what is the difference between efflorescence and hydroscopic and deliquescent

    • Posted by Shubham Kumar 5 years, 5 months ago

    CBSE > Class 10 > Science
    • 2 answers

    ? Pranali.A.P ? 5 years, 5 months ago

    Hygroscopic and deliquescent materials are both able to absorb moisture from the air. However, hygroscopy and deliquescence don't mean precisely the same thing: Hygroscopic materials absorb moisture, while deliquescent materials absorb moisture to the extent that the substance dissolves in water.

    0Thank You

    Gaurav Seth 5 years, 5 months ago

     

    Deliquescent substances - certain solid substances, when exposed to air absorb water, enough to form solutions. Example, solid NaOH, CaCl2, CaCl2. 6H2O, P4O10 (forms HPO3), FeCl3, KOH, MgCl2.

     

    Hygroscopic Substances - substances absorb water from air, but not enough to form solutions. Examples of such substances include CaO, NaNO3, NaCl, Sucrose and CuO. Also, certain liquid substances absorb water from the air to get diluted - these are also regarded as being hygroscopic. Example, conc. H2SO4 and conc. HCl.

     

    lf a hydroscopic substance absorbs so much moisture that an aqueous solution is formed, the substance becomes deliquescent.

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