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Chemical formula of washing soda is

Na₂ SO₄10 H₂O

NaHCO₃

Na₂CO₃10H₂O

Ca(OH)₂

Explanation:

Sodium carbonate, Na2CO3, is the inorganic compound with the formula Na2CO3 and its various hydrates. All forms are white, water-soluble salts that yield moderately alkaline solutions in water. Historically it was extracted from the ashes of plants growing in sodium-rich soils.

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