Waec Model Questions Vol1 2025 Chemistry Question 3

Practice objective / multiple choice question 3 from the 2025 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Medium Difficulty

Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

The standard reduction potentials are: Cu²⁺ + e⁻ → Cu⁺ E° = +0.153 V and Cu⁺ + e⁻ → Cu(s) E° = +0.521 V. Using these data, calculate the equilibrium constant K at 25 °C for the disproportionation reaction 2 Cu⁺ (aq) ⇌ Cu²⁺ (aq) + Cu(s).

Answer Options

A. 1.2×10^11

B. 5.0×10^10

Correct Answer C. 2.5×10^11

D. 3.8×10^12

Correct Answer

Correct Option:

2.5×10^11

About This Question

This is Waec Model Questions Vol1 2025 Chemistry Question 3. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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Waec Model Questions Vol1 2025 Chemistry Question 3

The standard reduction potentials are: Cu²⁺ + e⁻ → Cu⁺ E° = +0.153 V and Cu⁺ + e⁻ → Cu(s) E° = +0.521 V. Using these data, calculate the equilibrium constant K at 25 °C for the disproportionation reaction 2 Cu⁺ (aq) ⇌ Cu²⁺ (aq) + Cu(s).

Answer Options

About This Question

Master the Exam!

The standard reduction potentials are: Cu²⁺ + e⁻ → Cu⁺ E° = +0.153 V and Cu⁺ + e⁻ → Cu(s) E° = +0.521 V. Using these data, calculate the equilibrium constant K at 25 °C for the disproportionation reaction 2 Cu⁺ (aq) ⇌ Cu²⁺ (aq) + Cu(s).