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1. A series of chemical tests were performed on an unknown substance. When potassium iodide was added, a color change indicated the presence of ammonium. Addition of sodium carbonate produced bubbles, identifying the substance as sodium carbonate. 2. Further tests with barium chloride and chromium chloride produced precipitates, confirming the presence of sulfate and chromate ions respectively. 3. Based on the results, the unknown substance was identified as ammonium nitrate.

Author

teshna19vm

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EN