Question 1
Consider the following reaction:
2 Al(s) + 3 Ni
2+(aq) → 2 Al
3+(aq) + 3 Ni(s)
E° = 1.410 V
What would be the cell potential at 25 °C as calculated from the Nernst equation if [Ni
2+] = 0.020 M, [Al
3+] = 3.60 M?
◦ 1.388 volts
◦ 1.034 volts
◦ 1.471 volts
◦ 1.349 volts
◦ 1.410 volts
Question 2
Consider the following standard reduction potentials:
Ni
2+(aq) + 2 e
-→ Ni(s)
E° = -0.26 V
I
2(s) + 2 e
-→ 2 I
-(aq)
E° = +0.54 V
Under standard conditions:
◦ Ni
2+(aq) is a stronger oxidizing agent than I
2(s), and I
-(aq) is a stronger reducing agent than Ni(s)
◦ I
2(s) is a stronger oxidizing agent than Ni
2+(aq), and Ni(s) is a stronger reducing agent than I
-(aq)
◦ Ni(s) is a stronger oxidizing agent than I
-(aq), and Ni
2+(aq) is a stronger reducing agent than I
2(s)
◦ I
-(aq) is a stronger oxidizing agent than Ni(s), and I
2(s) is a stronger reducing agent than Ni
2+(aq)