Neco Model Questions Vol1 2022 Chemistry Question 22

Practice objective / multiple choice question 22 from the 2022 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 22 NECO_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective

Standard reduction potentials at 25 °C are: \(\mathrm{Cu^{2+}+2e^- \rightarrow Cu(s)}\) \(E^{\circ}=+0.34\ \text{V}\) and \(\mathrm{Zn^{2+}+2e^- \rightarrow Zn(s)}\) \(E^{\circ}=-0.76\ \text{V}\). A galvanic cell is set up with a Zn(s) electrode immersed in 1.0 M ZnSO\(_4\) and a Cu(s) electrode immersed in 0.10 M CuSO\(_4\).\n(a) Write the overall cell reaction.\n(b) Calculate the cell EMF at 25 °C.\n(c) Determine the equilibrium constant \(K\) for the cell reaction.

Answer Options

A. E = 0.85 V; K ≈ 5.0×10^30
B. E = 1.12 V; K ≈ 3.0×10^38
C. E = 0.98 V; K ≈ 2.0×10^34
Correct Answer D. E = 1.07 V; K ≈ 1.5×10^37
Correct Answer
D
Correct Option:
E = 1.07 V; K ≈ 1.5×10^37

About This Question

This is Neco Model Questions Vol1 2022 Chemistry Question 22. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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