WAEC Chemistry 2019 Objective — Question 27
Question 27 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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What is the characteristic of the gas liberated when dilute hydrochloric acid is added to iron(II) sulphide?
- A. Turns lime water milky
- B. Decolorizes bromine water
- C. Gives a pop sound
- D. Turns lead(II) ethanoate paper blackCorrect
Explanation
The gas produced is hydrogen sulphide (H2S), which has a rotten-egg smell and turns lead(II) ethanoate paper black due to formation of black lead(II) sulphide.
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