Na2CO3 is called _________________?
Correct answer: B. Soda ash
- A. Washing soda
- B. Soda ash
- C. Plaster of Paris
- D. Calcite
Explanation
Anhydrous sodium carbonate, Na₂CO₃, is called soda ash. Washing soda is hydrated sodium carbonate, commonly Na₂CO₃·10H₂O, so the water of crystallisation distinguishes the two names.
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