Neco Model Questions Vol1 2018 Chemistry Question 50

Practice objective / multiple choice question 50 from the 2018 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2018 Chemistry Objective / Multiple Choice Medium Difficulty
Question 50 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • objective

A galvanic cell is constructed with the half‑cells Fe^{3+}/Fe^{2+} (standard potential E^{\circ}=+0.77\,V) and Ce^{4+}/Ce^{3+} (standard potential E^{\circ}=+1.61\,V). At 298 K the cell operates spontaneously. Write the overall redox equation, calculate the standard cell potential E^{\circ}_{cell}, and determine the equilibrium constant K for the reaction.

Answer Options

A. K ≈ 7.8×10^{15}
B. K ≈ 3.2×10^{12}
C. K ≈ 2.1×10^{13}
Correct Answer D. K ≈ 1.5×10^{14}
Correct Answer
D
Correct Option:
K ≈ 1.5×10^{14}

About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 50. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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