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A solid X when heated gives off a brown gas. If X is soluble in...

Chemistry
JAMB 1978

A solid X when heated gives off a brown gas. If X is soluble in excess sodium hydroxide solution but insoluble in excess ammonium hydroxide solution, then X is

  • A. basic lead carbonate
  • B. lead (II) nitrate
  • C. sodium carbonate
  • D. zinc nitrate
  • E. sodium nitrate
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Correct Answer: Option B
Explanation

 Lead nitrate reacts with ammonium hydroxide solution to form a white precipitate. This white precipitate does not dissolve in excess ammonium hydroxide.

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