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
jamb 1980chemistry

The correct answer is E. barium chloride solution a white precipitate insoluble in dilute HCl

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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