Description of experiment
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Needed compounds:
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pyrogallol : C6H3 (OH)3
Class:
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elem=C
redox
Summary:
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Pyrogallol is oxidized by oxygen from air, even in neutral solution. This
reaction, however, proceeds slowly.
Description:
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Dissolve some pyrogallol in water: The resulting liquid is colorless. The
pyrogallol dissolves very easily.
Wait half an hour, with the liquid in contact with air: The liquid has
turned yellow/brown.