A solid sample containing some Fe2+ weighs 2.360 g. It required 36.44 mL 0.0244 M KMnO4 to titrate the Fe2+ in the dissolved sample to a pink end point. The balacned redox reaction is shown below. 8H++MnO4 - +5Fe2+------>Mn2++5Fe3++4H2O1.) How many moles MnO4 - were used in the titration?2.) How many grams of Fe are there in the sample3.) How many moles Fe2+ are there in the sample?4.) What is the percentage of Fe(by mass) in the sample?

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Answered: A solid sample containing some Fe2+…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.30QAP

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A solid sample containing some Fe2+ weighs 2.360 g. It required 36.44 mL 0.0244 M KMnO4 to titrate the Fe2+ in the dissolved sample to a pink end point. The balacned redox reaction is shown below.

8H⁺+MnO₄ ^- +5Fe²⁺------>Mn²⁺+5Fe³⁺+4H₂O

1.) How many moles MnO₄ ^- were used in the titration?

2.) How many grams of Fe are there in the sample

3.) How many moles Fe²⁺ are there in the sample?

4.) What is the percentage of Fe(by mass) in the sample?

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