Igcse Model Questions Vol1 2024 Chemistry Question 32

Practice objective / multiple choice question 32 from the 2024 Igcse Model Questions Vol1 Chemistry examination.

Igcse Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 32 IGCSE_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

A galvanic cell is constructed as follows: Fe³⁺(0.020 M) | Fe²⁺(0.10 M) || Cu²⁺(0.050 M) | Cu(s). Standard electrode potentials are E°(Fe³⁺/Fe²⁺) = +0.77 V and E°(Cu²⁺/Cu) = +0.34 V. (a) Calculate the cell EMF at 25 °C using the Nernst equation (give your answer to three significant figures). (b) From this EMF, determine the equilibrium constant K for the overall cell reaction (express K in scientific notation with two significant figures).

Answer Options

Correct Answer A. 0.427 V; 2.8×10^{14}
B. 0.459 V; 5.6×10^{15}
C. 0.401 V; 9.0×10^{12}
D. 0.382 V; 1.2×10^{13}
Correct Answer
A
Correct Option:
0.427 V; 2.8×10^{14}

About This Question

This is Igcse Model Questions Vol1 2024 Chemistry Question 32. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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