Solving Fick’s Laws for particular applications
like electrochemistry involves establishing Initial
Conditions and Boundary Conditions
At t=0 i.e., before experiment
starts, concentration is C & is
same throughout the solution
At t>0 the concentration at the
electrode surface goes to zero
the moment power is turned on
Some distance away from the
electrode surface at anytime t>0
the concentration is still C in the
“bulk solution” unaffected by
the electrode process
Initial
Boundary 1
Boundary 2