Question

During electrolysis, all ions.
A. move in the same direction.
B. moves toward oppositely charged electrodes.
C. do not move.
D. none of the above.

Answer 1

Hint: During electrolysis current is provided, so the ionic substance decomposes into ions. These ions are attracted by the oppositely charged electrodes.

Complete answer:
Electrolysis is a process used for the separation of metal and non-metals.
In electrolysis, the ionic compound is taken into the electrolytic cell which is known as an electrolytic solution. The cell also has two electrodes, anode and cathode. These electrodes are dipped into the electrolytic solution.
The anode is a positively charged electrode and the cathode is a negatively charged electrode.
Both the electrodes are connected by wire to a battery for the supply of direct current.
When the current passes through the cell, the ionic compound decomposes into ions.
Ions have opposite charges, the positively charged ion goes towards the negatively charged electrode cathode.
The ion gets electrons at the cathode and gets reduced.
The negatively charged ion goes towards the positively charged electrode anode.
The ion loses electrons at the anode and gets oxidized.
As both the oppositely charged ions do not move in the same direction so, option (A) is incorrect.
As both the oppositely charged ions move in the opposite direction so, option (B) is correct.
As both the ions move so, the option (C) is incorrect.

Therefore, option (B) moves toward oppositely charged electrodes, is correct.

Note: The charge of electrodes are opposite in the electrochemical cell. The anode is negative and the cathode is positive. The electrochemical cell converts chemical energy into electric energy whereas the electrolytic cell uses electric energy for the decomposition of chemical substances.