passwella.
Menu

JAMB Chemistry 1980 Question 35

Question 35

Qualitative Analysis

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

  1. A.silver nitrate solution, a white precipitate insoluble in dilute HNO3
  2. B.barium chloride solution, a white precipitate insoluble in dilute H2SO4
  3. C.barium chloride solution, a white precipitate insoluble in dilute solution.
  4. D.barium chloride solution a white precipitate soluble in dilute ammonia.
  5. E.barium chloride solution a white precipitate insoluble in dilute HCl.
Show the answer and explanation

Answer: E (barium chloride solution a white precipitate insoluble in dilute HCl.)

Explanation

Barium sulphate is a white precipitate that does not dissolve in dilute HCl, whereas barium carbonate or sulphite would dissolve.