Post-UTME Chemistry 2018 Objective — Question 12
Question 12 of 21 from the Post-UTME Screening (Post-UTME) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Dilute AgNO3 is added to a solution, X, and a white precipitate soluble in excess ammonia is formed. X, therefore, contains
- A. SO4 2-
- B. Cl -Correct
- C. CO3 2-
- D. NO3 -
Explanation
AgCl forms a white precipitate that dissolves in excess ammonia (forming a soluble silver-ammine complex), indicating chloride ions are present.
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