An electrochemical cell can behave like an electrolytic cell... | Chemistry | SolveeIt

Question

An electrochemical cell can behave like an electrolytic cell when ________ .

$E_{cell}=0$

$E_{cell} > E_{ext}$

$E_{ext} > E_{cell}$

$E_{cell} = E_{ext}$

Answer

$E_{ext} > E_{cell}$

Explanation

Solution

If an external opposite potential is applied on the galvanic cell and increased reacting continues to take place till the opposing voltage reaches the value $1.1\,V$ . At this stage no current will flow through the cell because if external potential further increase then reaction will occurs in opposite direction or reversible reaction. Hence, this works as an electrolytic cell.

Chemistry Question on Electrochemistry

Solution