Lecture 11

Question 1

Deposition of __________ on Ag makes a very good non-polarizable electrode for any biological tissue or biological electrolyte with ______

Answer 1

non soluble AgCl, Cl

Question 2

Reaction 1

Answer 2

Ag = Ag+ + e-

Question 3

Reaction 2

Answer 3

Ag+ + Cl- = AgCl

Question 4

Ks =

Answer 4

aAg X aCL

Question 5

Ks is:

Answer 5

The rate of precipitation and of returning into solution

Question 6

In the body, the activity of Cl is:

Answer 6

quite stable and predictable

Question 7

Cd

Answer 7

capacitance of the electric double layer

Question 8

Rd

Answer 8

resistance to current flow across the electrode-electrolyte interface

Question 9

Rs

Answer 9

is the series resistance associated with the conductivity of the electrolyte

Question 10

At high frequencies

Answer 10

Rs

Question 11

At low frequencies

Answer 11

Rs+Rd

Question 12

For differential biopotential measurements between identical electodes:

Answer 12

the half cell potentials cancel out and the net impedance is twice the electrode impedance