ACTION 12.19: INTERACTION OF SALTS WITH AIR AND MOISTURE
A salt that gives off part of its water of crystallization when exposed to air is called:
An example of such salt is
A compound absorbs water from the atmosphere when exposed to air without forming a solution. An example of such a compound is
A substance that absorbs so much water from the atmosphere that it dissolves to form a solution is called
An example of such compound is
Answer (2)
A salt that gives off water when exposed to air is called an efflorescent salt , like hydrated copper(II) sulfate. Hygroscopic substances , such as calcium chloride, absorb water without dissolving, while deliquescent substances , like sodium hydroxide, absorb enough water to form a solution. ;
Efflorescent salts release water when exposed to air, like hydrated copper(II) sulfate. Hygroscopic substances absorb water without dissolving, such as calcium chloride. Deliquescent substances absorb water and dissolve to form a solution, as seen with sodium hydroxide.
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