Question

wirte a short note on washing soda (na2 co3and10H2O)​

Answer 1

Answer:

What is washing soda (Na2CO3.10H2O)?

Washing soda finds its application in numerous ways, be it from household uses to a vast range of industrial applications. It is an alkaline compound with a high alkaline character which has the capability to remove adamant stains from clothes during washing. Washing soda formula is written as Na2CO3.10H2O. The chemical name of washing soda is sodium carbonate. Chemically soda ash is a hydrated salt of sodium carbonate.

Solvay Process- Preparation of Sodium Carbonate

Steps involved in the manufacture of sodium carbonate are explained below:

Purification of Brine

Formation of sodium hydrogen carbonate

Formation of sodium carbonate

Recovery of ammonia

Step 1: Purification of Brine

Concentrated brine is obtained by the process of evaporation and impurities like calcium, magnesium, etc are removed by the precipitation process. The concentrated brine solution undergoes filtration and is mixed with ammonia in the ammonia tower and the ammonia tower gets cooled.

Step 2: Formation of sodium hydrogen carbonate

In a carbonate tower, carbon dioxide is passed through an ammoniated brine solution.

NH3(aq) + CO2(g) + NaCl(aq) +H2O → NaHCO3(s) + NH4Cl(aq)

Step 3: Formation of sodium carbonate

Sodium Bicarbonate (NaHCO3) formed is obtained from the tower and is heated at a temperature of 300°C. Hence, formations of sodium carbonate take place.

2NaHCO3 → Na2CO3 + CO2 + H2O

Step 4: Recovery of ammonia

Ammonia can be recovered by treating the solution of NH4Cl with Ca (OH)2. This ammonia is again used in the Solvay process and CaCl2 is obtained as a by-product.

2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + H2O

Physical properties and chemical properties of sodium carbonate:

It is a crystalline solid which is white.

It exists as a monohydrated salt (Na2CO3.10H2O), anhydrous salt (Na2CO3), heptahydrous salt (Na2CO3.7H2O) and decahydrate salt (Na2CO3.10H2O).

Sodium carbonate is basic in nature.

It has a melting point of 851°C.

In the presence of heat, it loses its water to form an anhydrous salt (soda ash).

Na2CO3.10H2O → Na2CO3.H2O → Na2CO3 (at 373 K)

Uses of Washing Soda:

Used as a cleansing agent in industries and household.

It finds its application in paper, textile, soap, and detergent industries.

It is used in the process of softening of water.

It is used in the manufacturing of glass.

It is one of the most important agents in laundries.

Get associated with the family of BYJU’S to understand the concepts in-depth with the help of an expert faculty.

Explanation:

Mark it as brainliest answer