Question

During electrolysis electrons flow from?
A. Cations to cathode
B. Anode to anions
C. Cathode to anode
D. Anions to anode

Answer 1

Hint: We have to understand that the process of electrolysis takes place in electrochemical cells. An electrochemical cell contains the cathode, which is positive, anode, which is negative, and an electrolytic solution. We know that electrochemical cells transform chemical energy to electrical energy or vice-versa.

Complete answer:
We have to know that electrolysis is a process in which decomposition of ionic substances takes place when electricity is passed through them. Interchanging of ions and atoms takes place either by the addition of electrons or by removal of electrons from the external circuit.
We have to understand that the process of electrolysis takes place in electrochemical cells.
The parts of electrochemical cells are cathode, anode and electrolytic solution.
The direction of electron flow in electrolytic cells is inverted from the spontaneous direction of electron flow as in galvanic cells.
In the process of electrolysis, when electric current is passed through a solution with the help of battery the flow of electrons from cathode to anode. In the cathode, a reduction reaction takes place and in the anode, oxidation reactions take place.
Therefore, the option (C) is correct.

Note:
We must know that electrolysis is one of the many methods which are widely used in industry. Electrolysis is used not only for extraction of metals as well in the reduction of the impurities in metal. This process is used in the medical field as well like for permanent removal of hair, etc. Even though such an application has some side effects but for long run it is good.