Two concentration cells are prepared, both with 90.0 mLof 0.0100 MCu(NO₃)₂ and a Cu bar in each half-cell. (a) In the first concentration cell, 10.0 mL of 0.500 M NH₃ isadded to one half-cell; the complex ion Cu(NH₃)₄²⁺ forms, and E꜀ₑₗₗ is 0.129 V. Calculate Kf for the formation of the complex ion.(b) Calculate E꜀ₑₗₗ when an additional 10.0 mL of 0.500 M NH₃ is added. (c) In the second concentration cell, 10.0 mL of 0.500 M NaOHis added to one half-cell; the precipitate Cu(OH)₂ forms (Kₛₚ=2.2X10⁻²⁰). Calculate E°꜀ₑₗₗ. (d) What would the molarity of NaOH have to be for the addition of 10.0 mL to result in an E°꜀ₑₗₗ of 0.340 V?
Two concentration cells are prepared, both with 90.0 mLof 0.0100 MCu(NO₃)₂ and a Cu bar in each half-cell. (a) In the first concentration cell, 10.0 mL of 0.500 M NH₃ isadded to one half-cell; the complex ion Cu(NH₃)₄²⁺ forms, and E꜀ₑₗₗ is 0.129 V. Calculate Kf for the formation of the complex ion.(b) Calculate E꜀ₑₗₗ when an additional 10.0 mL of 0.500 M NH₃ is added. (c) In the second concentration cell, 10.0 mL of 0.500 M NaOHis added to one half-cell; the precipitate Cu(OH)₂ forms (Kₛₚ=2.2X10⁻²⁰). Calculate E°꜀ₑₗₗ. (d) What would the molarity of NaOH have to be for the addition of 10.0 mL to result in an E°꜀ₑₗₗ of 0.340 V?
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 153CP: Consider the following galvanic cell: A 15 0-mole sample of NH is added to the Ag compartment...
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Two concentration cells are prepared, both with 90.0 mLof 0.0100 MCu(NO₃)₂ and a Cu bar in each half-cell. (a) In the first concentration cell, 10.0 mL of 0.500 M NH₃ isadded to one half-cell; the complex ion Cu(NH₃)₄²⁺ forms, and E꜀ₑₗₗ is 0.129 V. Calculate Kf for the formation of the complex ion.(b) Calculate E꜀ₑₗₗ when an additional 10.0 mL of 0.500 M NH₃ is added. (c) In the second concentration cell, 10.0 mL of 0.500 M NaOHis added to one half-cell; the precipitate Cu(OH)₂ forms (Kₛₚ=2.2X10⁻²⁰). Calculate E°꜀ₑₗₗ. (d) What would the molarity of NaOH have to be for the addition of 10.0 mL to result in an E°꜀ₑₗₗ of 0.340 V?
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