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Which of the following tests would confirm-unequivocally that a solution X contain the sulphate ion...

Chemistry
JAMB 1980

Which of the following tests would confirm-unequivocally that a solution X contain the sulphate ion if it gives with?

  • A. silver nitrates solution, a white precipates insoluble in dilute HNO3
  • B. barium chloride solution, a white precipitate insoluble in dilute H2SO4
  • C. barium chloride solution, a white precipitate soluble in dilute HCl
  • D. barium chloride solution a white precipitate soluble in dilute ammonia
  • E. barium chloride solution a white precipitate insoluble in dilute HCl
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Correct Answer: Option E
Explanation

Sulfate ions in solution are detected using barium chloride solution.

The test solution is acidified using a few drops of dilute hydrochloric acid, and then a few drops of barium chloride solution are added.

A white precipitate of barium sulfate forms if sulfate ions are present.


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