Waec Model Questions Vol1 2022 Chemistry Question 14

Practice objective / multiple choice question 14 from the 2022 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 14 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective

A galvanic cell at 25 °C consists of the following half‑cells:\n\nAnode: Zn(s) | Zn²⁺ (0.010 M)\nCathode: Cu²⁺ (0.50 M) | Cu(s)\n\nStandard reduction potentials: E°(Cu²⁺/Cu) = +0.34 V, E°(Zn²⁺/Zn) = -0.76 V.\n\n(a) Calculate the cell potential E_cell under the given conditions.\n(b) Using the calculated E_cell, determine the equilibrium constant K for the overall cell reaction.

Answer Options

A. E_cell = 1.22 V; K ≈ 9.1×10^{40}
Correct Answer B. E_cell = 1.15 V; K ≈ 1.6×10^{37}
C. E_cell = 0.98 V; K ≈ 3.2×10^{30}
D. E_cell = 1.05 V; K ≈ 5.4×10^{33}
Correct Answer
B
Correct Option:
E_cell = 1.15 V; K ≈ 1.6×10^{37}

About This Question

This is Waec Model Questions Vol1 2022 Chemistry Question 14. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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