Electrochemistry - Result Question 13

13. In the electrolytic cell, flow of electrons is from

$(2003,1 M)$

(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

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Answer:

Correct Answer: 13. (c)

Solution:

  1. In electrolytic cell electrolysis occur at the cost of electricity :

At cathode : $M^{n+}+n e \longrightarrow M$ (electron gone in solution)

At anode : $ X^{n-} \longrightarrow X+n e^{-}$ (electron supplied to anode)

Therefore, electron is moving from cathode to anode via internal circuit.