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
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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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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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