Neco Model Questions Vol1 2022 Chemistry Question 13
Practice objective / multiple choice question 13 from the 2022 Neco Model Questions Vol1 Chemistry examination.
A galvanic cell is constructed as \(\mathrm{Zn(s) | Zn^{2+}(0.010\;M) || Cu^{2+}(0.10\;M) | Cu(s)}\) at \(25^{\circ}\mathrm{C}\). Standard reduction potentials are \(E^{\circ}_{\mathrm{Zn^{2+}/Zn}} = -0.76\) V and \(E^{\circ}_{\mathrm{Cu^{2+}/Cu}} = +0.34\) V. (a) Calculate the cell potential under the given conditions using the Nernst equation. (b) If the same cell is used to electrolyze water, what minimum external voltage must be applied, given that the thermodynamic voltage for water electrolysis is \(1.23\) V and the oxygen‑evolution overpotential is \(0.50\) V?
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About This Question
This is Neco Model Questions Vol1 2022 Chemistry Question 13. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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