Fe

1
VOLTAIC CELL SLIDE ONE OVERVIEW ANIMATION
2e-
2e-
VOLTMETER
2e-
2e-
Na
SO42-
Na
SO42-
SO42-
Na Na
Fe Fe
Pb
2e-
2e-
-
Fe2
Pb2
Pb
Na Na
SO42-

-
Pb
Pb2
-

-

2e- Pb2 ? Pb0(s)
Fe0(s) ? 2e- Fe2
ANODE (ANOX)
CATHODE (REDCAT)
2
AS THE Fe(S) IS OXIDIZED, IT DISSOLVES AND THE
ANODE LOSES MASS, THE IRON(II) IONS WILL MAKE THE
ANODE SOLUTION POSITIVE, THEREFORE THE NEGATIVE
SALT BRIDGE ION MOVES IN TO NEGATE THE CHARGE
VOLTAIC CELL SLIDE TWO THE ANODE
AS THE Fe(S) IS OXIDIZED, IT DISSOLVES AND THE
ANODE LOSES MASS AND 2e- ARE RELEASED
VOLTMETER
Na
SO42-
Na
SO42-
SO42-
Na Na
Fe Fe
Pb
2e-
Fe2
NSBTA Negative salt bridge to anode Never sell
booze to adolescents!
SO42-
Pb
Pb2
2e- Pb2 ? Pb0(s)
Fe0(s) ? 2e- Fe2
ANODE (ANOX)
CATHODE (REDCAT)
3
VOLTAIC CELL SLIDE THREE e- FLOW
2e-
2e-
VOLTMETER
2e-
2e-
ELECTRONS ALWAYS MOVE FROM ANODE TO CATHODE
(FATCAT). THE ELECTRONS BUILD UP IN THE ANODE
MAKING IT NEGATIVE, TRAVEL TO THE CATHODE WHERE A
METAL ION GAINS THEM IN REDUCTION, THE CATHODE IS
POSITIVE. VOLTMETER ALWAYS POINTS TO CATHODE,
Na
SO42-
Na
SO42-
Na Na
Fe Fe
Pb
2e-
2e-
Fe2
SO42-
Pb
Pb2
2e- Pb2 ? Pb0(s)
Fe0(s) ? 2e- Fe2
ANODE (ANOX)
CATHODE (REDCAT)
4
VOLTAIC CELL SLIDE FOUR THE CATHODE
2e-
2e-
VOLTMETER
2e-
THE POSITIVE SALT ION MIGRATES TO THE CATHODE TO
REPLACE CHARGE LOST AS Pb(II) ARE REDUCED TO Pb
SOLID.
2e-
THE SOLID LEAD BONDS (METALLIC BONDING) THE
CATHODE WHICH GAINS MASS. THIS IS ELECTROPLATING.
Na
SO42-
Na
SO42-
SO42-
Na Na
Fe Fe
Pb
2e-
2e-
Fe2
Pb2
Pb
Na Na
SO42-
AS ELECTRONS ARE GAINED BY Pb(II) IONS FROM THE
CATHODE, THE IONS BECOME REDUCED INTO Pb(S)
Pb
Pb2
2e- Pb2 ? Pb0(s)
Fe0(s) ? 2e- Fe2
ANODE (ANOX)
CATHODE (REDCAT)