To examine the effect of ion removal on cell voltage, achemist constructs two voltaic cells, each with a standard hydro-gen electrode in one compartment. One cell also contains aPb/Pb²⁺ half-cell; the other contains a Cu/Cu²⁺ half-cell.(a) What is E° of each cell at 298 K?(b) Which electrode in each cell is negative?(c) When Na₂S solution is added to the Pb²⁺ electrolyte, solid PbS forms. What happens to the cell voltage?(d) When sufficient Na₂S is added to the Cu²⁺ electrolyte, CuS forms and [Cu²⁺] drops to 1X10⁻¹⁶M. Find the cell voltage.
To examine the effect of ion removal on cell voltage, achemist constructs two voltaic cells, each with a standard hydro-gen electrode in one compartment. One cell also contains aPb/Pb²⁺ half-cell; the other contains a Cu/Cu²⁺ half-cell.(a) What is E° of each cell at 298 K?(b) Which electrode in each cell is negative?(c) When Na₂S solution is added to the Pb²⁺ electrolyte, solid PbS forms. What happens to the cell voltage?(d) When sufficient Na₂S is added to the Cu²⁺ electrolyte, CuS forms and [Cu²⁺] drops to 1X10⁻¹⁶M. Find the cell voltage.
Chapter18: Introduction To Electrochemistry
Section: Chapter Questions
Problem 18.18QAP
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To examine the effect of ion removal on cell voltage, achemist constructs two voltaic cells, each with a standard hydro-gen electrode in one compartment. One cell also contains aPb/Pb²⁺ half-cell; the other contains a Cu/Cu²⁺ half-cell.(a) What is E° of each cell at 298 K?(b) Which electrode in each cell is negative?(c) When Na₂S solution is added to the Pb²⁺ electrolyte, solid PbS forms. What happens to the cell voltage?(d) When sufficient Na₂S is added to the Cu²⁺ electrolyte, CuS forms and [Cu²⁺] drops to 1X10⁻¹⁶M. Find the cell voltage.
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