First slide

Electrochemical cell

Question

When an external opposite potential greater than 1.1 V is applied to the Galvanic cell

Easy

A

electrons flow from copper electrode to zinc electrode
B

zinc gets deposited at the zinc electrode
C

current flows from zinc to copper electrode
D

copper gets deposited at the copper electrode

Solution

$(a, b, c) When E_{ext} > 1 .1 V (in Daniellcell)$
(i) electrons flow from Cu to Zn and current flows in opposite direction.
Zn is deposited at the zinc electrode and Cu dissolves from Cu electrode.

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