Question 1
What is the relationship between the standard cell potentials,
E°, for the following two galvanic cell reactions?
I. | 2 Ag+(aq) + Sn2+(aq) → Sn4+(aq) + 2 Ag(s) |
II. | 2 Ag(s) + Sn4+(aq) → Sn2+(aq) + 2 Ag+(aq) |
◦
E°(I) =
E°(II)
◦
E°(I) = -
E°(II)
◦
E°(I) = -
E°(II)
◦
E°(I) =
E°(II)
Question 2
What is the standard cell potential for the reaction below?
Pb(s) + Br2(l) → Pb2+(aq) + 2 Br-(aq)
The standard reduction potential is -0.13 V for the Pb
2+/Pb half-cell and +1.09 V for the Br
2/Br
- half-cell.
◦ -0.95 V
◦ -1.22 V
◦ +0.95 V
◦ +1.22 V