Question

explain the phenomenon involved.
(b) Name the compound whose one formula unit is associated with 10 water molecules. How is it
prepared? Give equations of related reactions. Give two uses of the compound.
(n) What is snore formation?​

Answer 1

Answer:

The compound whose one formula unit is associated with 10 water molecules is sodium carbonate (Na

2

CO

3

.10H

2

O) commonly known as washing soda.

It is prepared by heating baking soda and then recrystallizing the product so obtained.

The equations related to the above reaction is

$2NaHCO </p><p>3</p><p> </p><p> </p><p>Δ</p><p> </p><p> Na </p><p>2</p><p> </p><p> CO </p><p>3</p><p> </p><p> +H </p><p>2</p><p> </p><p> O+CO </p><p>2</p><p> </p><p> </p><p></p><p>Na </p><p>2</p><p> </p><p> CO </p><p>3</p><p> </p><p> +10H </p><p>2</p><p> </p><p> O→Na </p><p>2</p><p> </p><p> CO </p><p>3</p><p> </p><p> .10H </p><p>2</p><p> </p><p> O$

$Na </p><p>2</p><p> </p><p> CO </p><p>3</p><p> </p><p> +10H </p><p>2</p><p> </p><p> O→Na </p><p>2</p><p> </p><p> CO </p><p>3</p><p> </p><p> .10H </p><p>2</p><p> </p><p> O$

Two uses of washing soda are:

(1) It is used in glass, soap and paper industries

(2) It is used for removing permanent hardness of water