VOLTAIC CELL
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VOLTAIC CELL SLIDE ONE OVERVIEW ANIMATION. 2e-. 2e-. VOLTMETER. 2e-. 2e-. Na +. SO 4 2-. Na +. SO 4 2-. SO 4 2-. Na + Na +. 2e-. Fe Fe. Pb. 2e-. -. Fe 2+. Pb 2+. Pb. Na + Na +. SO 4 2-. +. -. Pb 2+. Pb. -. +. -. +. Fe 0 (s)  2e - + Fe 2+.

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Fe fe

VOLTAIC CELL

SLIDE ONE

OVERVIEW

ANIMATION

2e-

2e-

VOLTMETER

2e-

2e-

Na+

SO42-

Na+

SO42-

SO42-

Na+ Na+

2e-

Fe

Fe

Pb

2e-

-

Fe2+

Pb2+

Pb

Na+ Na+

SO42-

+

-

Pb2+

Pb

-

+

-

+

Fe0(s) 2e- + Fe2+

2e- + Pb2+ Pb0(s)

ANODE (ANOX)

CATHODE (REDCAT)


Fe fe

VOLTAIC CELL

SLIDE TWO

THE ANODE

AS THE Fe(S) IS OXIDIZED, IT DISSOLVES AND THE ANODE LOSES MASSAND 2e- ARE RELEASED

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

VOLTMETER

Na+

SO42-

Na+

SO42-

SO42-

Na+ Na+

2e-

Fe

Fe

Pb

Fe2+

NSBTA

Negative salt bridge to anode

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SO42-

Pb2+

Pb

Fe0(s) 2e- + Fe2+

2e- + Pb2+ Pb0(s)

ANODE (ANOX)

CATHODE (REDCAT)


Fe fe

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+

2e-

Fe

Fe

Pb

2e-

Fe2+

SO42-

Pb2+

Pb

Fe0(s) 2e- + Fe2+

2e- + Pb2+ Pb0(s)

ANODE (ANOX)

CATHODE (REDCAT)


Fe fe

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+

2e-

Fe

Fe

Pb

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)

Pb2+

Pb

Fe0(s) 2e- + Fe2+

2e- + Pb2+ Pb0(s)

ANODE (ANOX)

CATHODE (REDCAT)


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