A sample of iron ore (containing only Fe2+ ions) weighing 0.2792 g was dissolved in dilute acid

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A sample of iron ore (containing only Fe2+ ions) weighing 0.2792 g was dissolved in dilute acid solution, and all the Fe(II) was converted to Fe(III) ions. The solution required 23.30mL of 0.0194 M K2Cr2O7 for titration. Calculate the percent by mass of iron in the ore.
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Chemistry

ISBN: 978-0077274313

10th edition

Authors: Raymond Chang

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