Post-UTME Chemistry 2016 Objective — Question 14
Question 14 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2016 Objective paper, with the correct answer and a full explanation.
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The formation of a dense white precipitate, on addition of dilute hydrochloric acid and barium chloride solution to an unknown solution on warming indicates the presence of
- A. Cl -
- B. SO3 2-
- C. NO3 -
- D. SO4 2-Correct
Explanation
Barium sulphate (BaSO4) is an insoluble white precipitate that remains even in the presence of dilute HCl, indicating the presence of sulphate ions.
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