Question 1
What is undergoing reduction in the redox reaction represented by the following cell notation?
Pb(
s) ∣ Pb
2+(
aq)
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H
+(
aq) ∣ H
2(
g) ∣ Pt(
s)
◦ Pt(
s)
◦ Pb
2+(
aq)
◦ H
+(
aq)
◦ H
2(
g)
◦ Pb(
s)
Question 2
Which of the following is TRUE about standard electrode potentials?
◦
E°
cell is negative for spontaneous reactions.◦ The electrode potential of the standard hydrogen electrode is exactly zero.
◦ Electrons will flow from a more positive electrode to a more negative electrode.
◦ The electrode in any half-cell with a greater tendency to undergo reduction is negatively charged relative to the standard hydrogen electrode and therefore has
E° < 0.
◦
E°
cell is the sum between standard reduction potentials of the anode and the cathode.