Waec Model Questions Vol1 2021 Chemistry Question 4
Practice objective / multiple choice question 4 from the 2021 Waec Model Questions Vol1 Chemistry examination.
A galvanic cell is set up at 25 °C with the half‑cells: Zn(s) | Zn²⁺ (0.010 M) || Cu²⁺ (0.10 M) | Cu(s). Standard reduction potentials are E°(Zn²⁺/Zn) = -0.76 V and E°(Cu²⁺/Cu) = +0.34 V. (a) Calculate the cell potential under the given conditions. (b) If this cell is used to drive the electrolysis of water and an overpotential of 0.20 V is required for oxygen evolution, what additional external voltage must be applied to the cell to achieve water splitting?
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About This Question
This is Waec Model Questions Vol1 2021 Chemistry Question 4. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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