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The amount of Fe in a 0.4891-g sample of an ore was determined by titrating with KCrO. After dissolving the sample in HCI, the

The amount of Fe in a 0.4891-g sample of an ore was det ermined by titrating with K,Cr,O,. After dissolving the sample in HCl, the iron was brought into the 2 oxidation state using a Jones reductor Titration to the diphenylamine sulfonic acid end point required 36.92 mL of 0.02153 M K,Cr,0,. Report the ores iron content as %w/w Fe,03. Fe2+ ? Fe, + e

The amount of Fe in a 0.4891-g sample of an ore was determined by titrating with KCrO. After dissolving the sample in HCI, the iron was brought into the +2 oxidation state using a Jones reductor. Titration to the diphenylamine sulfonic acid end point required 36.92 mL of 0.02153 M KCrO. Report the ore's iron content as % w/w FeO. Cr0, + 14H+ + 6e 2Cr+ + 7HO Fe+ Fe + e

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