Absolute velocities of tons:

Absolute velocities of tons:
The absolute velocity with which any ions moves through a solution depends on:
1- The nature of the ions.
2- The concentration of the solution.
3- The temperature.
4- The applied potential drop per cm of conducting path.
Such velocities can be measured directly by application of the moving boundary method. However, the velocities may also be calculated from conductance measurements.
1- Consider a pair of parallel electrodes d cm apart,
2- Across which is applied a potential difference ,
3- And between which is contained a volume of solution v containing 1mole of an electrolyte .
This electrolyte to be ionized to an extant ?:


the valences of the ions
X and y = the numbers of the ions obtained from 1 molecule of
the number of positive ions present between the two electrodes.

N = Avogadro?s number

I = the current flowing between the plates.
By substituting for ,



One mole of corresponds to equivalents of substance,
i
Therefore, if the concentration of the solution is c(eq\l) of solution,