Electrode potentials Flashcards
1
Q
When is a platinum electrode used in a standard cell
A
if the element is not present in solid form in the equation/ reaction
2
Q
conditions of a standard cell potential
A
Solutions have concentrations of exactly one moldm^-3
298*k
100KPa
3
Q
Example salt bridge
A
KNO3
4
Q
More negetive E* values means …
A
Greater tendency to loose electrons and undergo oxidation
lower tendency to gain electrons and undergo reduction
5
Q
More positive E* values means …
A
lower tendency to loose electrons and undergo oxidation
greater tendency to gain electrons and undergo reduction
6
Q
E* values in metals
A
More negative more likely to loose electrons
more positive more likely to gain electrons
7
Q
E* cell equation
A
Ecell = E (positive electrode) - E* (negative electrode)
