5 Steps to a 5 AP Chemistry

 The standard cell potetial can be used to calculate the Gibbs free energy for the reaction:

ΔG°=−nFE°cell. Know how to use this equation.

 The standard cell potential can also be used to calculate the equilibrium constant for a

reaction: Know how to use this equation.

 The Nernst equation, can be used to calculate the

potential of a cell that is not at standard conditions, or to calculate the concentration

of one cell compartment if the standard cell potential, the actual cell potential,

and the other concentrations are known. Know how to use the Nernst equation for these

purposes.

EE

n

cell=°−cell Q at 25 C,

⎛

⎝

⎜

⎞

⎠

⎟ °

0 0592.

log

logK.

nE

=

°cell

0.0592 V

Electrochemistry  259