Electrochemistry Flashcards
1
Q
Define standard electrode potential
A
It is the voltage produced when a half cell is connected to the standard H - half cell under standard conditions
2
Q
Define standard cell potential
A
It is the voltage produced when two half cells are connected to each other under standard conditions
3
Q
When is a reaction feasible?
A
If the calculated Ecell value is positive then a reaction is predicted to be feasible
4
Q
Reasons why reaction may not be feasible
A
1) High activation energy. This cold be because strong bonds need to be broken
2) Conditions are non-standard
5
Q
Ecell formula
A
Ecell = Ered - Eoxi
6
Q
The nernst equation
A
E = Eo + 0.059/n log (oxi species/reduced species)
7
Q
Equation for gibbs
A
G = nEcellF
8
Q
Equation for charge (Q)
A
Q = It
time in seconds
9
Q
A
