Question

Answer the following questions relating your answers only to salts in the list given below:

Anhydrous Calcium chloride, Copper sulphate-5-water, Sodium carbonate-10- water.

Which compound is

(c) deliquescent?

Answer 1

Definition:

• Some anhydrous substances have a strong attraction to the water. When they are exposed to the atmosphere, they become moist and dissolve forming a saturated solution. Such substances are called Deliquescent.

Example:

• Anhydrous Calcium Chloride $\mathrm{\left(}{\mathrm{CaCl}}_{\mathrm{2}}\mathrm{\right)}$.

Uses of Deliquescent Compounds:

• Prevent Ice formation.
• Production of activated charcoal.

Anhydrous Calcium Chloride $\mathrm{\left(}{\mathrm{CaCl}}_{\mathrm{2}}\mathrm{\right)}$ is deliquescent.