how is washing soda prepared by solvary process ?write chemical equation involved in it. write uses of washing soda
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It is prepared by Solvay’s process.
1)A cold and concentrated solution of sodium chloride is reacted with ammonia and carbon dioxide to obtain sodium hydrogen carbonate.
2)Sodium hydrogen carbonate is separated by filtration,dried and heated.Oh heating sodium hydrogen carbonate decomposes to form sodium carbonate.
3)Anhydrous sodium carbonate is dissolved in water and recrystallised to get washing soda crystals containing 10 molecules of water of crystallisation.
NH3+CO2+H2O ..... NH4HCO3
NH4HCO3+NaCl ....... NaHCO3+NH4Cl
2NaHCO3....... Na2CO3 + H2O + CO2
Properties
1)It is a white transparent crystalline solid.
2)It is soluble in water.
3)The solution of washing soda in water is alkaline which turns red litmus to blue.
4)It has cleansing properties.
Uses
1)It is used to remove permanent hardness of water.
2)It is used in the manufacture of glass,soap,paper.
3)It is used for washing clothes.
4)It is used in the manufacture of borax.
1)A cold and concentrated solution of sodium chloride is reacted with ammonia and carbon dioxide to obtain sodium hydrogen carbonate.
2)Sodium hydrogen carbonate is separated by filtration,dried and heated.Oh heating sodium hydrogen carbonate decomposes to form sodium carbonate.
3)Anhydrous sodium carbonate is dissolved in water and recrystallised to get washing soda crystals containing 10 molecules of water of crystallisation.
NH3+CO2+H2O ..... NH4HCO3
NH4HCO3+NaCl ....... NaHCO3+NH4Cl
2NaHCO3....... Na2CO3 + H2O + CO2
Properties
1)It is a white transparent crystalline solid.
2)It is soluble in water.
3)The solution of washing soda in water is alkaline which turns red litmus to blue.
4)It has cleansing properties.
Uses
1)It is used to remove permanent hardness of water.
2)It is used in the manufacture of glass,soap,paper.
3)It is used for washing clothes.
4)It is used in the manufacture of borax.
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