Waec Model Questions Vol1 2017 Chemistry Question 29

Practice objective / multiple choice question 29 from the 2017 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Medium Difficulty
Question 29 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

A galvanic cell at 25 °C is constructed as follows: Zn(s) | Zn²⁺ (0.010 M) || Cu²⁺ (0.50 M) | Cu(s). Standard reduction potentials are E°(Zn²⁺/Zn) = -0.76 V and E°(Cu²⁺/Cu) = +0.34 V. (a) Calculate the cell potential E_cell under the given conditions. (b) Determine the equilibrium constant K for the overall cell reaction.

Answer Options

A. E_cell = 1.20 V; K ≈ 2.1 × 10³⁹
B. E_cell = 1.05 V; K ≈ 5.0 × 10³⁰
Correct Answer C. E_cell = 1.15 V; K ≈ 1.7 × 10³⁷
D. E_cell = 0.95 V; K ≈ 3.2 × 10²⁸
Correct Answer
C
Correct Option:
E_cell = 1.15 V; K ≈ 1.7 × 10³⁷

About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 29. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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