Question

Which of the following is a highly deliquescent solid?

• A. $Fe{Cl}_3$
• B. $Fe{SO}_4$
• C. $Cu{SO}_4$
• D. All of these

Answer 1

The correct option is A $Fe{Cl}_3$

Deliquescence is the process by which a substance absorbs moisture from the atmosphere until it dissolves in the absorbed water and forms a solution.

Deliquescence occurs when the vapour pressure of the solution that is formed is less than the partial pressure of water vapour in the air. The solid substance obtained by the process of deliquescence is known as deliquescent solid.

The example of deliquescent solid is $FeC{l}_3$