Kirstin's* Anne Oakley Problem

Many have heard of Annie Oakley, sharp-shooting femme fatale of the west. But deep within the bowels of Osmond lurks another, less known......Wild Lloyd** Hiccough, leader of the Fume Hoodlums! One dark night, Lloyd meets Paul Minary, challenger to the Hoodlum empire. They agree to each spit out a redox reacton until the last man can't think of one. "Ha!" laughed Lloyd, "This is easy! In fact, I'll give you five such equations to start!"

1) PBr3(l) + 3H2O(l) -> H3PO3(aq) + 3HBr(aq)

2) Cr2O72-(aq) + C1-(aq) -> Cr3+(aq) + C1O3-(aq)

3) NO2-(aq) + Cr2O72-(aq) -> Cr3+ + NO3-(aq)

4) 2OH-(aq) + Cr2O72-(aq) 2CrO42-(aq) + H2O(l)

5) H2O2(aq) + Cl2O7(aq) -> ClO2-(aq) + O2(g) + H2O(l)

Paul just smiles and begins to plan the Hoodlums next heist. What's wrong?

*Kir was in the famous 1999 class. She has returned many times to her favorite lectures. She has served as an informal advisor and mentor to subsequent generations of Chem 13H students, helping them with their resilience, their homework, their posters, and life in general.

**Lloyd was the very popular assistant and grader for several years in Chem 13H. He is now a physics professor at the University of Oklahoma.