Neco 2022 Chemistry Question 25

Practice objective / multiple choice question 25 from the 2022 Neco Chemistry examination.

Neco 2022 Chemistry Objective / Multiple Choice Hard Difficulty

Question 25 NECO • 2022 • CHEMISTRY • objective

A galvanic cell is set up with a zinc electrode immersed in 0.10 M ZnSO\(_4\) solution and a copper electrode immersed in an unknown concentration of CuSO\(_4\) solution. The standard reduction potentials are \(E^{\circ}_{\text{Zn}^{2+}/\text{Zn}} = -0.76\ \text{V}\) and \(E^{\circ}_{\text{Cu}^{2+}/\text{Cu}} = +0.34\ \text{V}\). At 25 °C the cell emf is measured to be 1.05 V. Calculate the concentration of Cu\(^{2+}\) ions in the copper half‑cell. (Use \(n = 2\) for the overall reaction and \(0.0592\ \text{V}\) for \(\frac{RT}{F}\) at 25 °C.)

A. 4.0 \\times 10^{-3} M

B. 2.0 \\times 10^{-2} M

C. 1.0 \\times 10^{-3} M

Correct Answer D. 2.0 \times 10^{-3} M

Correct Answer

Correct Option:

2.0 \times 10^{-3} M

This is Neco 2022 Chemistry Question 25. It is one of the objective questions from the 2022 Neco Chemistry examination.

Difficulty level: Hard .

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