Question

explain the formation of washing soda and mention it uses​

Answer 1

Answer:

In the following three steps, washing soda is prepared from sodium chloride or common salt. Firstly, a cold and concentrated sodium chloride solution is reacted with ammonia and carbon dioxide to obtain sodium hydrogen carbonate. ... Secondly, now sodium hydrogen carbonate is separated by filtration, dried and heated

Answer 2

Answer:

NaCl +NH3 +CO2 +H2O → NaHCO3 +NH4Cl

Secondly, now sodium hydrogen carbonate is separated by filtration, dried and heated. On heating sodium hydrogen carbonate decomposes to form sodium carbonate. This anhydrous sodium carbonate is known as soda ash.

2NaHCO3 → Na2CO3 +H2O +CO2

Soda ash

The preparation of Sodium Carbonate is also known as Solvay process. But before that calcium carbonate (limestone) was heated to release carbon dioxide.

Carbon has 4 valence electrons. In order to make octet, it shares each of the four electrons with each of the three hydrogen atoms and one chloride atom. Since, bonds are formed because of sharing of electrons, hence these are covalent bonds.