Gce Model Questions Vol1 2022 Chemistry Question 8
Practice objective / multiple choice question 8 from the 2022 Gce Model Questions Vol1 Chemistry examination.
A galvanic cell is set up as \(\text{Zn(s)}|\text{Zn}^{2+}(0.010\,\text{M})\,||\,\text{Cu}^{2+}(0.10\,\text{M})|\text{Cu(s)}\) at 25 °C. Standard potentials: \(E^{\circ}(\text{Zn}^{2+}/\text{Zn}) = -0.76\,\text{V}\), \(E^{\circ}(\text{Cu}^{2+}/\text{Cu}) = +0.34\,\text{V}\). (a) Calculate the cell EMF under the given concentrations using the Nernst equation. (b) If the cell delivers a constant current of 0.50 A for 2.00 h, what mass of copper is deposited on the cathode, assuming a current efficiency of 95%? Give your answer in grams to three significant figures.
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This is Gce Model Questions Vol1 2022 Chemistry Question 8. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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