Question

Give two examples of deliquescent substances.

Answer 1

Deliquescent substances:

• Deliquescent substances are referred to known as those substances which absorbs moisture from the surrounding and dissolves themselves with the moisture or water to form a solution.
• This process occurs only when the vapor pressure of the solution formed is lower than the partial pressure of the moisture (water vapor) in the air.
• If the humidity in the air will be sufficiently high then all the water-soluble salts will be known as deliquescent substances.
• Examples are sodium hydroxide$\left(\mathrm{NaOH}\right)$, calcium chloride$\left({\mathrm{CaCl}}_2\right)$, potassium hydroxide$\left(\mathrm{KOH}\right)$, ammonium chloride$\left({\mathrm{NH}}_4\mathrm{Cl}\right)$ , etc.

Hence, two examples of deliquescent substances are: sodium hydroxide$\left(\mathrm{NaOH}\right)$, ammonium chloride$\left({\mathrm{NH}}_4\mathrm{Cl}\right)$.