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Soal 6 'The amount of \( \mathrm{Fe} \) in a \( 0.4891 \mathrm{~g} \) sample of an ore was determined by a redox titration with \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \). The sample was dissolved in \( \mathrm{HCl} \) and the iron brought into the +2 oxidation state using a Jones reductor. Titration to the diphenylamine sulfonic acid end point required \( 36.92 \mathrm{~mL} \) of \( 0.02153 \mathrm{M} \) \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \). Report the iron content of the ore as \%w/w \( \mathrm{Fe}_{2} \mathrm{O}_{3} \). Soal 7 'A \( 25.00-\mathrm{mL} \) sample of a liquid bleach was diluted to \( 1000 \mathrm{~mL} \) in a volumetric

          Soal 6
'The amount of \( \mathrm{Fe} \) in a \( 0.4891 \mathrm{~g} \) sample of an ore was determined by a redox titration with \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \). The sample was dissolved in \( \mathrm{HCl} \) and the iron brought into the +2 oxidation state using a Jones reductor. Titration to the diphenylamine sulfonic acid end point required \( 36.92 \mathrm{~mL} \) of \( 0.02153 \mathrm{M} \) \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \). Report the iron content of the ore as \%w/w \( \mathrm{Fe}_{2} \mathrm{O}_{3} \).

Soal 7
'A \( 25.00-\mathrm{mL} \) sample of a liquid bleach was diluted to \( 1000 \mathrm{~mL} \) in a volumetric

Soal 6
'The amount of Fe in a 0.4891 g sample of an ore was determined by a redox titration with K2Cr2O7. The sample was dissolved in HCl and the iron 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 K2Cr2O7. Report the iron content of the ore as %w/w Fe2O3.

Soal 7
'A 25.00-mL sample of a liquid bleach was diluted to 1000 mL in a volumetric

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