Question 1
For the galvanic cell reaction, expressed below using shorthand notation, what half-reaction occurs at the anode?
Fe(s) ∣ Fe2+(aq) ∣∣ Cd2+(aq) ∣Cd(s)
◦ Cd
2+(
aq) + 2 e
- → Cd(
s)
◦ Fe
2+(
aq) + 2 e
- → Fe(
s)
◦ Cd(
s) → Cd
2+(
aq) + 2 e
-◦ Fe(
s) → Fe
2+(
aq) + 2 e
-Question 2
For the galvanic cell Pt(
s) ∣ Sn
2+(
aq), Sn
4+(
aq) ∣∣ Cd
2+(
aq) ∣ Cd(
s), what is the function of the Pt(
s)?
◦ Pt is the cathode and does not appear in the overall cell reaction.
◦ Pt is the anode and is a reactant in the overall cell reaction.
◦ Pt is the cathode and is a product in the overall cell reaction.
◦ Pt is the anode and does not appear in the overall cell reaction.