Question

Consider the following standard reduction potentials in acid solution at 25 °C: PbI2(s) + 2e- →...

Consider the following standard reduction potentials in acid solution at 25 °C:

PbI2(s) + 2e- → Pb(s) +2I-(aq) Eºred = -0.365 V

Ca2+(aq) + 2e- → Ca(s)    Eºred = -2.868 V

Pt2+(aq) + 2e- → Pt(s)    Eºred = 1.18 V

Br2(l) + 2e- → 2Br-(aq)    Eºred = 1.066 V

Which one of the following is the strongest reducing agent?

1.

Pb(s)

2.

Ca(s)

3.

Pt(s)

4.

Br-(aq)

5.

Pt2+(aq)

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