Why Might Sodium Carbonate (Washing Soda,Na₂CO₃)be Added to Hard Water

question 81

Multiple Choice

Why might sodium carbonate (washing soda,Na₂CO₃) be added to hard water to aid in cleaning?

• A)The hard ions in the water are more attracted to the carbonate ions -2 charge.
• B)The hard ions are dissolved by the added sodium ions.
• C)The soap gets softer due to the added ions.
• D)The ions solubilize the soap due to ion-ion intermolecular attraction,which improves the cleaning ability.
• E)none of the above

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