Washing soda is prepared by sodium carbonate by adding 10 molecules of water of crystallization to each formula unit and is also known as sodium carbonate decahydrate or washing soda.
SodiumCarbonate
Na
2
CO
3
+10H
2
O⟶
washing soda
Na
2
CO
3
.10H
2
O
Washing soda is a sodium salt that is basic nature.
Washing soda can be used to remove both temporary and permanent hardness in water. It is soluble in water and adds a large amount of carbonate ions in the water. These react with dissolved calcium and magnesium ions to produce insoluble precipitates.
Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.
Washing soda reacts with soluble chloride and sulphates of calcium and magnesium present in hard water of from insoluble carbonates which can be removed by filtration
Answers & Comments
Answer:
Washing soda is prepared by sodium carbonate by adding 10 molecules of water of crystallization to each formula unit and is also known as sodium carbonate decahydrate or washing soda.
SodiumCarbonate
Na
2
CO
3
+10H
2
O⟶
washing soda
Na
2
CO
3
.10H
2
O
Washing soda is a sodium salt that is basic nature.
Washing soda can be used to remove both temporary and permanent hardness in water. It is soluble in water and adds a large amount of carbonate ions in the water. These react with dissolved calcium and magnesium ions to produce insoluble precipitates.
Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.
Answer:
Solution:
Washing soda reacts with soluble chloride and sulphates of calcium and magnesium present in hard water of from insoluble carbonates which can be removed by filtration
CaCl
2
+Na
2
CO
3
→CaCO
3
↓2NaCl
MgCl
2
+Na
2
CO
3
→MgCO
3
↓+2NaCl
CaSO
4
+Na
2
CO
3
→CaCO
3
↓+Na
2
SO
4
MgSO
4
+Na
2
CO
3
→MgCO
3
↓+Na
2
SO
4