A 0.8571 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then precipitated as Fe2O3·xH2O. This precipitate is filtered, washed and ignited to Fe2O3. The Fe2O3 (159.70 g/mol) weighs 0.1132 g. What is the percentage of iron (Fe, 55.85 g/mol) in the sample?

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A:

Q: An iron ore was analyzed by dissolving a 2.9912-g sample in concentrated HCI. The resulting solution…

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.