Neco Model Questions Vol1 2020 Chemistry Question 8
Practice objective / multiple choice question 8 from the 2020 Neco Model Questions Vol1 Chemistry examination.
Consider a galvanic cell constructed as follows: \(\text{Zn(s)}| \text{Zn}^{2+}(0.010\ \text{M}) || \text{Cu}^{2+}(0.10\ \text{M})| \text{Cu(s)}\). The standard reduction potentials are \(E^{\circ}_{\text{Zn}^{2+}/\text{Zn}} = -0.76\ \text{V}\) and \(E^{\circ}_{\text{Cu}^{2+}/\text{Cu}} = +0.34\ \text{V}\).\n(a) Calculate the cell emf at \(25^{\circ}\text{C}\).\n(b) What concentration of \(\text{Zn}^{2+}\) would be required to make the cell emf exactly \(1.05\ \text{V}\) at the same temperature?
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This is Neco Model Questions Vol1 2020 Chemistry Question 8. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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