Notations
3
Physical-chemistry
Symbols and units
Physical-chemistry quantity
Symbol
Units
Activation energy
E a
J mol
−1
, eV
Activity of species i
a i
−
Admittance
Y
S
Angular velocity
ω
rad s
−1
Capacity
C
F
Chemical potential
μ
J mol
−1
Concentration of species i
[i], C i
mol m
−3
, mol L
−1
Conductance
G
S
Current density, (exchange current)
i, (i 0 )
A m
−2
, A cm
−2
Diffusion coefficient
D
cm
2
s
−1
Electric charge
Q
C
Electric mobility
u
cm
2
V
−1
s
−1
Electric resistance
R
Ω
Electrical conductivity
σ
S cm
−1
Electrochemical mobility
u
~
cm
2
s
−1
J
−1
mol
Electrochemical potential
~
μ
J mol
−1
Electromotive force (emf)
ΔE
V
Electrostatic potential
φ
V
Enthalpy of formation
Δ f H
J mol
−1
Entropy of formation
Δ f S
J mol
−1
K
−1
Equilibrium constant
K
−