Igcse Model Questions Vol1 2021 Chemistry Question 10

Practice essay / theory question 10 from the 2021 Igcse Model Questions Vol1 Chemistry examination. This question covers Electrochemistry .

Igcse Model Questions Vol1 2021 Chemistry Essay / Theory
Topic: Electrochemistry
Question 10 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • essay

A galvanic cell is constructed using a zinc electrode immersed in 0.10 M ZnSO₄ solution and a copper electrode immersed in 0.010 M CuSO₄ solution. The two half‑cells are linked by a salt bridge. Standard reduction potentials at 25 °C are: \(\mathrm{Zn^{2+} + 2e^- \rightarrow Zn(s)}\) E° = –0.76 V \(\mathrm{Cu^{2+} + 2e^- \rightarrow Cu(s)}\) E° = +0.34 V The cell operates at 25 °C. You are required to:

Question Parts

( a )
Write the cell notation for the galvanic cell as described.
( b )
Calculate the electromotive force (E) of the cell at 25 °C using the Nernst equation. Show all steps and give your answer to two decimal places.
( c )
If the cell delivers a constant current of 0.50 A for 2.00 hours, calculate the mass of zinc that will be deposited (or dissolved) at the zinc electrode. State any assumptions you make.

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About This Question

This is Igcse Model Questions Vol1 2021 Chemistry Question 10. It is one of the essay questions from the 2021 Igcse Model Questions Vol1 Chemistry examination.

The question covers Electrochemistry .

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