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Question

(A) An electrochemical cell functions as a galvanic cell when the external potential $(E_{ext})$ is less than the cell potential $(E_{cell})$,allowing

Vedclass · Accepted Answer

$E_{ext} > E_{cell}$

Vedclass · Answer

(A) An electrochemical cell functions as a galvanic cell when the external potential $(E_{ext})$ is less than the cell potential $(E_{cell})$,allowing spontaneous chemical reactions to produce electricity.However,when an external potential $(E_{ext})$ greater than the cell potential $(E_{cell})$ is applied,the direction of the current is reversed,and the cell behaves as an electrolytic cell,where non-spontaneous reactions are driven by the external power source.Therefore,the correct condition is $E_{ext} > E_{cell}$.

When does an electrochemical cell behave as an electrolytic cell?

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