6. Answer all parts. (a) Describe an experiment to measure the standard potential for the reduction of lead (II) ions to form lead metal. (b) An electrochemical cell is set-up, at 25°C, as in the figure below. Volts Cd Salt Bridge Fe Cd2+ Fe2+ Use line notation to represent the electrochemical cell, assuming standard conditions for all components in the cell. Predict the direction of spontaneous change, and calculate the cell'voltage (emf) for the cell under standard conditions (i) (ii) where Fe (aq.) + 2e → Fe(s) E"= -0.44 V Cd (aq.) + 2e → Cd(s) E" = -0,40 V Predict the direction of spontaneous change, and calculate the cell voltage (emf) for the cell if a cadmium ion solution of 2.0 mol/L, and an iron ion solution of 0.05 mol/L were used instead of standard conditions. (iii)

6. Answer all parts. (a) Describe an experiment to measure the standard potential for the reduction of lead (II) ions to form lead metal. (b) An electrochemical cell is set-up, at 25°C, as in the figure below. Volts Cd Salt Bridge Fe Cd2+ Fe2+ Use line notation to represent the electrochemical cell, assuming standard conditions for all components in the cell. Predict the direction of spontaneous change, and calculate the cell'voltage (emf) for the cell under standard conditions (i) (ii) where Fe (aq.) + 2e → Fe(s) E"= -0.44 V Cd (aq.) + 2e → Cd(s) E" = -0,40 V Predict the direction of spontaneous change, and calculate the cell voltage (emf) for the cell if a cadmium ion solution of 2.0 mol/L, and an iron ion solution of 0.05 mol/L were used instead of standard conditions. (iii)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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