Neco Model Questions Vol1 2021 Chemistry Question 27
Practice objective / multiple choice question 27 from the 2021 Neco Model Questions Vol1 Chemistry examination.
A 250.0 mL sample of an aqueous Fe²⁺ solution is titrated with 0.100 M KMnO₄ in acidic medium. The balanced redox reaction is \(\mathrm{MnO_4^- + 5Fe^{2+} + 8H^+ \rightarrow Mn^{2+} + 5Fe^{3+} + 4H_2O}\). If 32.0 mL of the KMnO₄ solution are required to reach the endpoint, (a) calculate the concentration of Fe²⁺ in the original solution. (b) If a student mistakenly used the stoichiometric coefficient 4 (instead of the correct 5) for Fe²⁺, what concentration would they obtain, and (c) what is the percentage error of the mistaken value relative to the correct concentration?
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About This Question
This is Neco Model Questions Vol1 2021 Chemistry Question 27. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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