Gce Model Questions Vol1 2020 Chemistry Question 43
Practice objective / multiple choice question 43 from the 2020 Gce Model Questions Vol1 Chemistry examination.
In acidic solution the following redox reaction occurs: \(\mathrm{MnO_4^- + Fe^{2+} \rightarrow Mn^{2+} + Fe^{3+}}\). The standard reduction potentials are \(E^{\circ}(\mathrm{MnO_4^- / Mn^{2+}}) = +1.51\ \text{V}\) and \(E^{\circ}(\mathrm{Fe^{3+} / Fe^{2+}}) = +0.77\ \text{V}\). The concentrations are \([\mathrm{MnO_4^-}] = 0.010\ \text{M},\ [\mathrm{Fe^{2+}}] = 0.050\ \text{M},\ [\mathrm{Fe^{3+}}] = 0.020\ \text{M},\ [\mathrm{Mn^{2+}}] = 0.005\ \text{M}\). Calculate the cell potential at 298 K using the Nernst equation. (Give your answer to two decimal places in volts.)
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About This Question
This is Gce Model Questions Vol1 2020 Chemistry Question 43. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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