Recent content by Chris-jap

Hello everybody I would like to know the potential of two electrode. 1- The first is the electrode of Ag/Ag+ in a saturated solution of NaCl I think that the pKs of AgCL is 9.8 (is it right?) So E= E0+0.06log[(Ks)1/2] E=0.8-0.506 E=0.506 vs ENH Is it correct? (in a book I found a...

Thank you for your help I have done the change you propose So now if Iunderstand C(r,t) becomes C(n) I found a similar differential equation that the one you propose (n2 instead of n) -1/2 n dC/n = 1/n2 d/dn(n2 dC/dn) Are you agree with this one? And then nd2C/dn2 +...

Hello every body I have previously post my question in this topic: Physics Help and Math Help - Physics Forums > Science Education > Homework & Coursework Questions > Other Sciences > Fick and Cottrell Law And after Goku suggestion I post my question here. So my problem deal with the...

Thank you for your help Your answer solve one part of my problem. I made a mistake for the expression of current density, Goku you are right. Thanks to you I solve one part of my problem I found this solution for planar diffusion (not me, in a chemistry book) C(x,t)=C0erf(x/(Dt)1/2)...

Hello everybody I have got an electrochemistry probleme In the case of a planar electrode (one dimension) the current density is proportinnal to the concentration of electroactive species: i=-nFkC C depending of time From Fick law dC/dt=Dd2C/d2x we can found Cottrell law: i=-nFAC0(D/PIt)1/2...