Galvanic cells, EMF, Nernst equation, conductance, Kohlrausch's law, electrolysis and batteries.
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Q1 · Electrochemistry · MEDIUM
A galvanic cell is constructed using zinc and silver electrodes. The cell potential is measured to be 1.56 V at 298 K. If the concentration of Zn²⁺ is 0.1 M and the standard electrode potential of the cell is 1.56 V, what is the concentration of Ag⁺ ions? (Given: E°(Ag⁺/Ag) = 0.80 V, E°(Zn²⁺/Zn) = -0.76 V, 2.303RT/F = 0.059 V at 298 K)
Q2 · Electrochemistry · HARD
During the electrolysis of aqueous copper sulfate solution using copper electrodes, if 0.25 F of electricity is passed through the solution, what mass of copper will be deposited at the cathode? (Atomic mass of Cu = 63.5 g mol⁻¹)
Q3 · Electrochemistry · MEDIUM
The standard reduction potentials are: Cu²⁺/Cu = +0.34 V and Zn²⁺/Zn = -0.76 V. What is the standard cell potential (E°cell) for the cell Zn|Zn²⁺||Cu²⁺|Cu, and what is the maximum electrical work obtainable when 2 moles of electrons are transferred? (F = 96500 C/mol)