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OXIDATION STATES OF CHROMIUM
(4 of 4)
Addition of excess sodium hydroxide
6M NaOH (excess NaOH) is added to the Cr(NO3)3 solution creating and then dissolving the Cr(OH)3(s) precipitate, yielding the deep green chromite ion, Cr(OH)4-.
Copyright:© 1997 Richard Megna - Fundamental Photographs
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