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Chemistry · Oct / Nov 2023 · Paper 11 · Question 22

5070Preparation of salts

A solution of sodium carbonate is added to tap water. A white precipitate forms. Which ion present in the tap water causes the precipitate to form?

  1. Achloride
  2. Bmagnesium
  3. Cpotassium
  4. Dsulfate

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Correct answer: B. magnesium

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