A small amount of silica gel and that of anhydrous cacl2 are placed separately in two corners of a vessel containing water vapour. what phenomenon will occur ?
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Adsorption of water vapours will occur where silica gel is kept in the vessel and absorption of water vapours will occur where calcium chloride is placed.
- Silica gel is a very good adsorbent.
- So water vapour gets adsorbed on its surface.
- Anhydrous CaCl2 is hygroscopic in nature .
- So it will absorb water vapours and swells up forming CaCl2.2H2O
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