Neco 2022 Chemistry Question 12
Practice objective / multiple choice question 12 from the 2022 Neco Chemistry examination.
A galvanic cell is constructed as follows: \(\text{Cu(s)}\ |\ \text{Cu}^{2+}(0.050\ \text{M})\ ||\ \text{Fe}^{2+}(x\ \text{M})\ |\ \text{Fe(s)}\). The standard reduction potentials are \(E^{\circ}_{\text{Cu}^{2+}/\text{Cu}} = +0.337\ \text{V}\) and \(E^{\circ}_{\text{Fe}^{2+}/\text{Fe}} = -0.447\ \text{V}\). At 298 K the measured cell emf is 0.78 V. Calculate the concentration \(x\) of the \(\text{Fe}^{2+}\) solution (in mol·L⁻¹, three significant figures).
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About This Question
This is Neco 2022 Chemistry Question 12. It is one of the objective questions from the 2022 Neco Chemistry examination.
Difficulty level: Medium .
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