Question 1
A galvanic cell consists of a Zn
2+/Zn half-cell and a standard hydrogen electrode. If the Zn
2+/Zn half-cell standard cell functions as the anode, and the standard cell potential is 0.76 V, what is the standard reduction potential for the Zn
2+/Zn half-cell?
◦ -0.38 V
◦ +0.76 V
◦ +0.38 V
◦ -0.76 V
Question 2
A galvanic cell consists of one half-cell that contains Ag(
s) and Ag
+(
aq), and one half-cell that contains Cu(
s) and Cu
2+(
aq). What species are produced at the electrodes under standard conditions?
| Ag+(aq) + e- → Ag(s) | E° = +0.80 V |
| Cu2+(aq) + 2 e- → Cu(s) | E° = +0.34 V |
◦ Cu
2+(
aq) is formed at the cathode, and Cu(
s) is formed at the anode.
◦ Ag(
aq) is formed at the cathode, and Cu(
s) is formed at the anode.
◦ Cu(
s) is formed at the cathode, and Ag
+(
aq) is formed at the anode.
◦ Ag(
s) is formed at the cathode, and Cu
2+(
aq) is formed at the anode.
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