Electrified Interfaces. The structure of the electrical double layer. Refresher-Galvanic cells. line notation (shorthand) | interface between two phases. || salt bridge Cd(s) | CdCl 2 (aq, M) || AgNO 3 (aq, M) | Ag(s). Half-Reactions. E cell = E cathode (+) - E anode(-).
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The structure of the electrical double layer
line notation (shorthand)
| interface between two phases. || salt bridge
Cd(s) | CdCl2(aq, M) || AgNO3(aq, M) | Ag(s)
Ecell= Ecathode (+) - Eanode(-)
Pt(s) | H2(g, A=1) | H+(aq, A=1) || Ag+(ag, A=1)
H+(aq, A=1) + e- 1/2H2(g, A=1) E0=0 V
for a half-rxn
aOx + ne- bRed
R= gas constant T= temperature in Kelvin
n= no. of electrons in half-rxn
F= Faraday constant (96485 C/mol)
A= activity (= 1 for a pure solid, liquid or solvent and expressed in mol/L for solutes and in bar for gases)
BDM (Bockris, Devanathan, Muller)