Question

The speed of the ion during passage of current depends upon:
A.Nature of ions
B.Potential difference
C.Distance of separation of electrodes
D.All of these

Answer 1

Ions are free to move in molten or in aqueous solution. Speed of ions is higher for higher potential difference and lower distance of separation of electrodes.

Complete step by step answer:
When a cathode and anode are inserted into solution, it allows the current to flow and the ions move with a certain kinetic energy.
$I = \dfrac{Q}{T}$
Where,
I = current
Q = charge
T = time
Ionic current increases the concentration of a particular ion. The key process of electrolysis is the exchange of ions. Each electrode attracts ions that are of the opposite charge. Positively charged ions or cations move towards the cathode and negatively charged ions or anions move towards the anode. At electrodes, ions release or absorb electrons and the ions that lose or gain electrons become charged ions and pass into the electrolyte and those that lose or gain electrons become uncharged ions get separated from the electrolyte.
The speed of the ion during passage of current depends upon nature of ions, potential difference, distance of separation of electrodes

Therefore, the correct answer is option (D).

Note: Movement of the migrating ions through the solution is because of the force exerted by the applied electric field. This force is proportional to the field strength and the ionic charge. The passage of current in the electrolyte is due to the movement of ions. Any compound or solution needs ions to allow electric charge to move through them.