WAEC Chemistry 2021 Objective — Question 19
Question 19 of 50 from the West African Examinations Council (WAEC) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
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19. When CuSO4(aq) is added to Pb(NO3)2(aq),
- A. there would be no visible change.
- B. a blue precipitate would be formed.
- C. the resulting solution would become colourless.
- D. a white precipitate would be formed.Correct
Explanation
A double decomposition reaction occurs, forming insoluble white PbSO4 precipitate.
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