Question

how baking soda is prepared ? Give reaction also?

Answer 1

It is prepared by solvay process. In this process cold and concentrayed solution of sodium chloride(Brine) is saturated with Ammonia. The Ammonical brine is fed from the top of the carbonating tower packed with perforated plates. CO2 is introduced with NH3and H2O to form ammonium bicarbonate

NH3 +H20 + CO2 _  (NH4)HCO3 .

Ammonium bi carbonate reacts with sodium Chloride(NaCl) to form Sodium hydrogencarbonate or Baking Soda

(NH4)HCO3 +NaCl _NaHCo3 + NH4Cl.

Answer 2

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HomeChemistry ArticleBaking Soda – Preparation, Properties And Uses
Baking Soda – Preparation, Properties And Uses
December 21, 2015 0 Comments
Applications of chemistry is exhibited in every part of a household like bathroom, kitchen etc. Sodium bicarbonate is one of the chemical which is used mainly because of its versatility, usefulness and its cheap price. Baking soda is the common name of sodium bicarbonate. Chemical formula of baking soda is NaHCO3.



History of sodium bicarbonate:

Medieval Egyptians first quarried Natron, natural deposit which mainly consists of Na2CO3. It was used as soap by them. It was in the year 1971 that NaHCO3 was first manufactured by a French chemist named Nicolas Leblanc. It was in the year 1846, John Dwight and Austin Church started a manufacturing unit to produce baking soda using sodium carbonate and carbon dioxide.



Preparation of Baking soda:

Solvay process is used for the production of sodium bicarbonate and sodium carbonate industrially. In this process carbon dioxide, water, ammonia and brine solution in its concentrated form, are used as raw materials. This process is used mainly as it is inexpensive and less number of raw materials is used to produce necessary chemicals. The important chemical reaction that is used in the production of baking soda and sodium carbonate is:



CO2+H2O+NH3+Na+→NaHCO3+NH+4


NaHCO3→Na2CO3+CO2+H2O


Carbon dioxide produced is recycled to produce NaHCO3.