Thermodynamics Solutions: #17

17.* (1995 3 2) Below are electrode potentials for conventional half-cell reactions (reduction potentials) versus the normal hydrogen electrode.

Fe(III) + e- = Fe(II)

0.77V

O2 + 2H+ + 2e- = H2O2

0.70V

H2O2 + 2H+ + 2e- = 2H2O

1.40V

2H+ + 2e- = H2

0.00V

A. Which substance among all of these components is the strongest reducing agent?

This has the highest oxidation potential => easiest to oxidize => best reducting agent.

B. Which substance is the strongest oxidizing agent?

This has the highest reduction potential => easiest to reduce => best oxidizing agent.