Answer :
the chemical formula for washing soda is - Na2CO3.10H2O
It is prepared by heating baking soda and then recrystallizing the product so obtained.
The equations related to the above reaction are:-
2NaHCO3
Na2CO3 + H2O + CO2
Na2CO3 + 10H2O ā Na2CO3.10H2O
Two applications of washing soda are:-
1. It is used in glass, soap and paper industries
2. It is used for removing permanent hardness of water.
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