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What is the chemical name of washing soda?

Answer and explanation

Correct answer: Sodium carbonate decahydrate

The governing concept is the relationship between a salt’s common name, chemical name, and water of crystallisation. Washing soda is sodium carbonate decahydrate, Na₂CO₃·10H₂O. The ten water molecules are part of its crystalline structure, so it is called a decahydrate. Hence option C is correct. Sodium chloride is common salt, sodium hydrogen carbonate is baking soda, and calcium sulphate hemihydrate is plaster of Paris.

Related tags

Washing SodaSodium CarbonateWater Of CrystallisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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