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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
55-11Electrochemical Composition Measurement
To calculate the potential of a hydrogen electrode, which is strictly speaking the dierence between
the potential of the electrode and that of the solution, one has to consider the electrochemical potentials
of the respective phases. e chemical potential of gases is usually expressed in terms of the pressure p
in
stead
of th
e
mo
lar
co
ncentration
c. Du
e
to th
e
el
ementary
re
lationship
pV
= nRT
fo
r
id
eal
ga
ses,
wh
ere
V is th
e
vo
lume
of th
e
ga
s
an
d
n is th
e
am
ount
of mo
les
th
e
pr
essure,
p is pr
oportional
to th
e
mo
lar
co
n-
centration
c = n
/V
. 
us,
a
ccording
to E
quation
5
5
.3
µ µ
H H
H
H
2 2
2
2
ln= +
0
0
RT
P
P
(55. ...
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Publisher Resources

ISBN: 9781439848913