First slide

Electrochemical cell

Question

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

Moderate

A

$E_{cell} = 0$
B

$E_{cell} > E_{ext}$
C

$E_{ext} > E_{cell}$
D

$E_{cell} = E_{ext}$

Solution

If an external opposite potential is applied on the Galvanic cell and increased,reaction continue to take place, till the opposing voltage reaches the value of 1.1 V. At this stage no
current flow through the cell and if there is any further increase in the external potential then reaction starts functioning in opposite direction.
Hence, this works as an electrolytic cell.

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