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 a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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