Gce Model Questions Vol1 2022 Chemistry Question 45
Practice objective / multiple choice question 45 from the 2022 Gce Model Questions Vol1 Chemistry examination.
In acidic solution the redox reaction between permanganate ion and ferrous ion occurs: \(\ce{MnO4^- + Fe^{2+} -> Mn^{2+} + Fe^{3+}}\). Standard potentials are \(E^\circ_{\ce{MnO4^-/Mn^{2+}}}=+1.51\) V and \(E^\circ_{\ce{Fe^{3+}/Fe^{2+}}}=+0.77\) V. (a) Write the balanced overall equation. (b) Calculate the standard cell potential \(E^\circ_{\text{cell}}\). (c) If [\(\ce{MnO4^-}\)]=0.010 M, [\(\ce{Fe^{2+}}\)]=0.10 M and all other species are at 1 M, determine the cell potential at 25 °C using the Nernst equation. Give your answer in volts to two decimal places.
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This is Gce Model Questions Vol1 2022 Chemistry Question 45. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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