Post-UTME Chemistry 2017 Objective — Question 10
Question 10 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2017 Objective paper, with the correct answer and a full explanation.
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CuSO4(aq) + H2S(g) -> CuS(s) + H2SO4(aq). In the reaction above, hydrogen sulphide acts as
- A. a weak acid
- B. a reducing agent
- C. an oxidizing agent
- D. a precipitating agentCorrect
Explanation
H2S provides sulphide ions that precipitate copper as insoluble CuS, acting as a precipitating agent.
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