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This is a concept in physical chemistry, which is a branch of chemistry that deals with the study of how matter behaves on a molecular and atomic level and how chemical reactions occur. Show more…
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You are given an electrochemical cell where the chemical reaction involves a silver complex. A silver metal bar is used as the positive electrode. The electrochemical potential for this cell is given by: E = EºAg+/Ag - 0.0592 (volts) * log(1/[Ag+]) For a test solution with a silver concentration of 0.001 M, the electrochemical cell potential is 0.20 volts. Find the silver electrode potential EºAg+/Ag. This same cell from (a) is used to measure the electrochemical potential for a new silver complex in equilibrium. If the measured cell potential is 0.324 volts, what is the silver concentration for this new silver complex at equilibrium?
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In a lab measuring electrochemical potential: - Would the measured potential of two electrodes of Cu/Cu^2+ (1M) and Cu/Cu^2+ (0.1M) be equal to, or different from, zero? Why? - Can the potentials that are measured in practice be considered standard potentials? Why? - What happens when we vary the concentration using the information given by the Nernst equation?
In making a specific galvanic cell, explain how one determines which electrodes and solutions to use in the cell.
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