Question 1
Consider the following standard reduction potentials in acid solution:
| E°(V) |
Al3+ + 3e–→ Al(s) | –1.66 |
Sn4+ + 2e–→ Sn2+ | +0.14 |
I2(s) + 2e–→ 2I– (aq) | +0.53 |
Which is the weakest oxidizing agent in this list?
◦ Al
3+(aq)
◦ Al(s)
◦ I
–(aq)
◦ I
2(s)
◦ Sn
4+(aq)
Question 2
Consider the following standard reduction potentials in acid solution:
Cr3+ + 3e–→ Cr | E° = –0.74 V |
Co2+ + 2e–→ Co | E° = –0.28 V |
MnO4– + 8H+ + 5e–→ Mn2+ + 4H2O | E° = +1.51 V |
The weakest reducing agent listed above is
◦ Cr
3+.
◦ Cr.
◦ Mn
2+.
◦ Co.
◦ MnO
4–.