what is transport number
Answers
Answer:
is a fraction of total electric current carried in a electrolyte
Answer:
The transport number, t_i, describes the fraction of the total current that is carried by the ion, i. This number depends on the relative mobility of the ions, and ultimate gives the relative contribution to conductivity of each of the ions. The sum of transport numbers over all the ions in a solution is always equal to 1.
Example
In a cell where the electrolyte is 1 M HCl and a current is going between the the anode and the cathode, H+ and Cl- must carry all of the current. In this case, H+ is moving towards the cathode and Cl- is moving towards the anode. If the transport number of Cl-, i.e, t_Cl- is 0.7, this means that 70% of the total current is carried by the Cl-, and that more Cl- ions are moving towards the cathode than H+ ions moving towards the anode. after, t_H+ is 0.3.