Define and give the example of Deliquescence.

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Solution

Deliquescence is a phenomenon in which a substance that absorbs moisture gradually from the air and becomes a liquid solution is called deliquescent.
Deliquescence occurs when the vapor pressure of the solution that is formed is less than the partial pressure of water vapor in the air.
All soluble salts will deliquesce (becoming liquid by absorbing moisture from the air) if the air is sufficiently humid.
For example- Sodium hydroxide (NaOH), calcium chloride (CaCl₂)

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