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Question 19 Question 20 10M Set Bridge FT The given diagram is a galvanic cell for Zn²+/Zn (E° = -0.76V) and Sn²/Sn (E° = -0.14 V). Identify the anode for the cell. a. Sn b. Zn 10M Calculate the standard free-energy change (AG) for the following reaction at 25 °C. Sn(s) + Cu (aq) Sn²* (aq) + Cu (s) Sn /Sn (E°= -0.14 V) Cu²/Cu (E° = 0.34 V) - a. 38.6 kJ/mol b. -46.3 kJ/mol c.-92.6 kJ/mol d. 92.6 kJ/mol 0. -38.6 kJ/mol

Question 19 Question 20 10M Set Bridge FT The given diagram is a galvanic cell for Zn²+/Zn (E° = -0.76V) and Sn²/Sn (E° = -0.14 V). Identify the anode for the cell. a. Sn b. Zn 10M Calculate the standard free-energy change (AG) for the following reaction at 25 °C. Sn(s) + Cu (aq) Sn²* (aq) + Cu (s) Sn /Sn (E°= -0.14 V) Cu²/Cu (E° = 0.34 V) - a. 38.6 kJ/mol b. -46.3 kJ/mol c.-92.6 kJ/mol d. 92.6 kJ/mol 0. -38.6 kJ/mol

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 65QAP: Consider a voltaic cell in which the following reaction takes place....
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Question 19 Question 20 10M Sat Bridge FT The given diagram is a galvanic cell for Zn²+/Zn (E° = -0.76V) and Sn²/Sn (E° = -0.14 V). Identify the anode for the cell. a. Sn Se b. Zn Calculate the standard free-energy change (AG) for the following reaction at 25 °C. Sn(s) + Cu² (aq) Sn²* (aq) + Cu (s) - Sn /Sn (E°= -0.14 V) Cu²/Cu (E° = 0.34 V) a. 38.6 kJ/mol b. -46.3 kJ/mol c. -92.6 kJ/mol d. 92.6 kJ/mol 0. -38.6 kJ/mol
Transcribed Image Text:Question 19 Question 20 10M Sat Bridge FT The given diagram is a galvanic cell for Zn²+/Zn (E° = -0.76V) and Sn²/Sn (E° = -0.14 V). Identify the anode for the cell. a. Sn Se b. Zn Calculate the standard free-energy change (AG) for the following reaction at 25 °C. Sn(s) + Cu² (aq) Sn²* (aq) + Cu (s) - Sn /Sn (E°= -0.14 V) Cu²/Cu (E° = 0.34 V) a. 38.6 kJ/mol b. -46.3 kJ/mol c. -92.6 kJ/mol d. 92.6 kJ/mol 0. -38.6 kJ/mol
Question 17 Question 18 The molar heats of fusion of benzene are 10.9 kJ/mol. Calculate the entropy changes for the solid → liquid transitions for benzene. At 1 atm pressure, benzene melts at 5.5 °C. O a. 198 J/K'mol b. 0.0391 J/K"mol c. 1.98 J/K mol d. 46.3 J/K'mol e. 39.1 J/K mol A galvanic cell consists of a Cd electrode in a 1.0 M Cd(NO3)2 solution and a Ag electrode in 1.0 M AgNO3 solution. Cd² (aq)+ 2e Cd (s) Eº = -0.40 V Ag (aq) + e- Ag(s) E° = 0.80V Calculate the standard cell potential of this cell. a. 1.20 V b. 2.00 V c. 0.00 V d. 0.40 V 0. 1.40 V
Transcribed Image Text:Question 17 Question 18 The molar heats of fusion of benzene are 10.9 kJ/mol. Calculate the entropy changes for the solid → liquid transitions for benzene. At 1 atm pressure, benzene melts at 5.5 °C. O a. 198 J/K'mol b. 0.0391 J/K"mol c. 1.98 J/K mol d. 46.3 J/K'mol e. 39.1 J/K mol A galvanic cell consists of a Cd electrode in a 1.0 M Cd(NO3)2 solution and a Ag electrode in 1.0 M AgNO3 solution. Cd² (aq)+ 2e Cd (s) Eº = -0.40 V Ag (aq) + e- Ag(s) E° = 0.80V Calculate the standard cell potential of this cell. a. 1.20 V b. 2.00 V c. 0.00 V d. 0.40 V 0. 1.40 V
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