Gce Model Questions Vol1 2017 Chemistry Question 10

Practice essay / theory question 10 from the 2017 Gce Model Questions Vol1 Chemistry examination. This question covers Electrochemistry, Nernst Equation, Galvanic Cells .

Gce Model Questions Vol1 2017 Chemistry Essay / Theory
Topics: Electrochemistry Nernst Equation Galvanic Cells
Question 10 GCE_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • essay

A galvanic cell is constructed with a zinc electrode immersed in 0.010 M ZnSO₄ solution and a copper electrode immersed in 0.10 M CuSO₄ solution. The cell is represented as: Zn(s) | Zn²⁺ (0.010 M) || Cu²⁺ (0.10 M) | Cu(s). Standard reduction potentials are: Zn²⁺ + 2 e⁻ → Zn(s) E° = –0.76 V; Cu²⁺ + 2 e⁻ → Cu(s) E° = +0.34 V.

Question Parts

( a )
Write the overall cell reaction and state which electrode functions as the anode and which as the cathode under standard conditions.
( b )
Calculate the cell potential at 25 °C for the given concentrations using the Nernst equation.
( c )
If a current of 0.500 A is drawn from the cell for 2.00 h, calculate the mass of copper deposited on the copper electrode.
( d )
Discuss qualitatively how increasing the concentration of Zn²⁺ to 1.0 M would affect the cell potential and explain the reason for this change.

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About This Question

This is Gce Model Questions Vol1 2017 Chemistry Question 10. It is one of the essay questions from the 2017 Gce Model Questions Vol1 Chemistry examination.

The question covers Electrochemistry, Nernst Equation, Galvanic Cells .

View More Gce Model Questions Vol1 2017 Chemistry Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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