plz tell me that how can be obtain washing soda from baking soda.

1.	plz tell me that how can be obtain washing soda from baking soda.
Answer» NaHCO3 --------------> Na2CO3 + CO2 + H2O Then ,Na2CO3 + H2O ---------> Na2CO3.10H2O Crystellising* By heating it and then crystelkising it

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