I am following the experiments detailed in the links below in order to find the electrical mobility of a variety of ionic species.

https://en.wikipedia.org/wiki/Ion_transport_number#Hittorf_method

www.phywe-es.com/index.php/fuseaction/download/lrn_file/versuchsanleitungen/P3060401/e/lec06_04_lv.pdf

http://users.metu.edu.tr/chem355/assets/4-355-Hittorf.pdf

I know that the ion transport number of an ionic species is the ratio of the current carried by that particular species over the total current conducted through the Hittorf cell. The change in concentration of the electrolytes, the mass of the electrodes, the voltage and current of the cell can be used to calculate this number. But, using these results, how do I calculate the drift velocity of those ions and hence values for their electrical mobility?

I tried looking at the Einstein-Smoluchowski relation but the concepts are a bit over my head right now. Any other tips, notes and comments on this experiment would also be appreciated.

I am following the experiments detailed in the links below in order to find the electrical mobility of a variety of ionic species:

• Wikipedia article on ion transport numbers and Hittorf method
• PHYWE series of publications - "Transport numbers" PDF
• "Determination of Transference Number by Hittorf’s Method" - PDF

I know that the ion transport number of an ionic species is the ratio of the current carried by that particular species over the total current conducted through the Hittorf cell. The change in concentration of the electrolytes, the mass of the electrodes, the voltage and current of the cell can be used to calculate this number. But, using these results, how do I calculate the drift velocity of those ions and hence values for their electrical mobility?

I tried looking at the Einstein-Smoluchowski relation but the concepts are a bit over my head right now. Any other tips, notes and comments on this experiment would also be appreciated.