Ammonium sulphate can be produced by reacting gypsum with____________________?
Correct answer: B. Ammonium carbonate
- A. Ammonia
- B. Ammonium carbonate
- C. Nitric acid
- D. None of these
Explanation
Ammonium carbonate reacts with gypsum to form ammonium sulphate and precipitated calcium carbonate: gypsum + ammonium carbonate → ammonium sulphate + calcium carbonate. Ammonia alone would not supply the sulphate-forming reaction.
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