1. REDOX PRACTICE MONDAY 4/07/08
Balance the redox reaction given C0 C+4 and Fe+3  Fe0 react, answer the following:
a) Balance both half reactions.
What species is reduced.
What species is oxidized
How many moles of electrons are transferred in the oxidation?
C0  C+4 +
+ Fe+3  Fe0
4e-
Add electrons to most + side to balance
3e-
Balance the electrons by finding the LCD of 4 and 3 which is 12, THEN multiply each reaction by the factor that gives 12 electrons.
C0  C e-
3e- + Fe+3  Fe0
Balance the electrons by finding the LCD of 4 and 3 which is 12, THEN multiply each reaction by the factor that gives 12 electrons.
3[C0  C e- ]
4[3e- + Fe+3  Fe0]
12 mol of electrons
transferred
3C0  3C e-
12e Fe+3  4Fe0
4Fe C0  3C+4 + 4Fe0
C0 IS OXIDIZED AND LOSES ELECTRONS
Fe+3 IS REDUCED AND GAINS ELECTRONS