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When dilute hydrochloric acid is added to iron(ll)sulphide, the gas evolved will?

Chemistry
JAMB 1980

When dilute hydrochloric acid is added to iron(ll)sulphide, the gas evolved will?

  • A. turn moist red litmus paper blue
  • B. turn lime water milky
  • C. blacken lead acetate paper
  • D. rekindle a glowing splint
  • E. burn a sqeakly pop
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Correct Answer: Option C
Explanation

The gas liberated is H\(_2\)S which  in the presence of  lead acetate paper gives a black coloration

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