When a sample of water was boiled, it lathered more readily with soap. it can be concluded that the sample most likely contained

  • A magnesium tetraoxosulphate (VI)
  • B suspended solids
  • C Organic impurities
  • D calcium hydrogentrioxocarbonate (IV)

The correct answer is D. calcium hydrogentrioxocarbonate (IV)

No explanation given
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