Question

In the electrolytic cell, flow of electrons is from

• A. cathode to anode in solution
• B. cathode to anode through external supply
• C. cathode to anode through internal supply
• D. anode to cathode through internal supply

Answer 1

Answer: (C)

cathode to anode through internal supply

Answer 2

In electrolytic cell electrolysis occur at the cost of electricity :
At cathode : $M^{n+ \, \, \, \, }+ \, \, ne \, \longrightarrow \, M$
\hspace60mm (electron gone in solution)
At anode : \hspace15mm X^{n- \, \, }\longrightarrow \, \, X \, \, + \, ne^-
\hspace60mm (electron supplied to anode)
Therefore, electron is moving from cathode to anode via internal circuit.