5/26/2018 EMF = Electromotive Force

1/6

EMF = Electromotive Force

5/26/2018 EMF = Electromotive Force

2/6

The voltage generated under standard state

condition

Temperature : 25*C

Pressure: 1atm

Concentration: 1 mol dm^-3

5/26/2018 EMF = Electromotive Force

3/6

Potential Difference, EMF

5/26/2018 EMF = Electromotive Force

4/6

K

Na

CaMg

Al

C

Zn

H

Fe

Sn

Pb

CuHg

Ag

Au

The larger the difference in position in the Electronegativity

Series, the higher the EMF induced.

5/26/2018 EMF = Electromotive Force

5/6

SRP: Standard Reduction Potential,

ERed

Ecell= E

cathode - E

anode

Al + Zn2+Al3++ Zn

If positive = not spontaneous reaction

Negative = spontaneous reaction

5/26/2018 EMF = Electromotive Force

6/6