JAMB Chemistry 2012 Objective — Question 32
Question 32 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2012 Objective paper, with the correct answer and a full explanation.
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A piece of filter paper moistened with lead(II) ethanoate solution turns black when the paper is dropped into a gas jar containing an unknown gas. The gas is likely to be
- A. sulphur(IV) oxide
- B. hydrogen chloride
- C. sulphur(VI) oxide
- D. hydrogen sulphideCorrect
Explanation
Lead(II) ethanoate paper turning black indicates the presence of hydrogen sulphide gas, which reacts to form black lead(II) sulphide.
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