Neco 2024 Chemistry Question 12

Practice objective / multiple choice question 12 from the 2024 Neco Chemistry examination.

Neco 2024 Chemistry Objective / Multiple Choice Medium Difficulty

Question 12 NECO • 2024 • CHEMISTRY • objective

A galvanic cell is constructed with the half‑cells \( \text{Fe}^{3+}/\text{Fe}^{2+} \) (standard potential \( E^{\circ}=+0.771\ \text{V} \)) and \( \text{Cu}^{2+}/\text{Cu} \) (standard potential \( E^{\circ}=+0.340\ \text{V} \)). The cell contains \(0.0100\ \text{M}\) \( \text{Fe}^{3+} \) and \(0.100\ \text{M}\) \( \text{Fe}^{2+} \) in one half‑cell, and \(0.0100\ \text{M}\) \( \text{Cu}^{2+} \) in the other half‑cell at \(25^{\circ}\text{C}\). The measured cell EMF is \(0.430\ \text{V}\). Calculate the equilibrium constant \(K\) for the overall redox reaction.

Correct Answer A. K \approx 3.7 \times 10^{14}

B. K \approx 5.0 \times 10^{15}

C. K \approx 1.0 \times 10^{12}

D. K \approx 2.5 \times 10^{13}

Correct Answer

Correct Option:

K \approx 3.7 \times 10^{14}

This is Neco 2024 Chemistry Question 12. It is one of the objective questions from the 2024 Neco Chemistry examination.

Difficulty level: Medium .

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