Three test tubes are given: sodium nitrate sodium sulfate and ammonium nitrate. How to recognize them.
| February 26, 2021 | education
Sodium sulfate can be recognized by the qualitative reaction with lead salts, while the lead sulfate will precipitate.
Na2SO4 + Pb (NO3) 2 = PbSO4 (precipitate) + 2NaNO3
Ammonium nitrate can be recognized by the release of ammonia. Add a little sodium hydroxide solution to the aqueous solution, heat the resulting mixture.
Sodium nitrate can be recognized with potassium hexahydroxyantimonate, and a white precipitate forms.
NaNO3 + K [Sb (OH) 6] = Na [Sb (OH) 6] + KCl
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