Group 8:
Loni Kuang, Victor Lee, Jimmy Li, Angel Huang, Carolyn Fung

AP Chemistry, Mr. Fong

May 30, 2009

Mods 14/15

Oxidation-Reduction Problems:

1.    Assign oxidation numbers to all the atoms in each of the following.

   a.    HI

   b.    PbCl₂

   c.    Cu

   d.    HSO₄^2-

   e.    Ba(OH)₂

   f.     FeO²

2.    Balance the following oxidation-reduction reactions that occur in acidic solution using the half reaction method.

   a.    Mg(s)+NO₃^-(aq)-->Mg²⁺(aq)+NO(g)

   b.    Cr₂O₇^2-(aq)+Br^-(aq)-->Cr³⁺(aq)+Br₂(g)

   c.    Pb(s)+PbO₂(s)+H₂SO₄(aq)-->PbSO₄(s)