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What is the scientific name for washing soda?

  • A.Sodium carbonate
  • B.Sodium bicarbonate
  • C.Calcium carbonate
  • D.Calcium bicarbonate

Answer: A

Washing soda is hydrated sodium carbonate, Na2CO3·10H2O.

It softens water by precipitating the calcium and magnesium as carbonates, so soap can lather. Baking soda is a different compound, sodium bicarbonate.

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