Description of experiment
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Needed compounds:
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nitric acid : HNO3
sodium sulfite : Na2SO3
Class:
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elem=N,S
redox
Summary:
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Sodium sulfite reacts vigorously with 68% nitric acid.
Description:
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Add a small amount of 68% nitric acid (azeotrope with water) to solid anhydrous
sodium sulfite: The acid reacts vigorously with the sodium sulfite. Brown NO2
is formed, but there also is a clear smell of SO2. The reaction is fast.