Neco Model Questions Vol1 2022 Chemistry Question 41
Practice objective / multiple choice question 41 from the 2022 Neco Model Questions Vol1 Chemistry examination.
A 0.500 g sample of an alloy containing only iron and copper is dissolved in dilute \(\mathrm{H_2SO_4}\) to give \(\mathrm{Fe^{2+}}\) and \(\mathrm{Cu^{2+}}\) ions. The solution is then treated with excess acidic potassium permanganate (\(\mathrm{KMnO_4}\)). In acidic medium the reaction is \(\mathrm{MnO_4^- + 5Fe^{2+} + 8H^+ \rightarrow Mn^{2+} + 5Fe^{3+} + 4H_2O}\); copper(II) ions do not react. If 12.5 mL of 0.0200 M \(\mathrm{KMnO_4}\) is consumed, calculate the mass percentage of iron in the original alloy.
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About This Question
This is Neco Model Questions Vol1 2022 Chemistry Question 41. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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