First slide

Electrochemical cell

Question

When applied external opposite potential in case of Daniell cell is less than 1.1 V, then

Easy

A

the cell behaves like an electrolytic cell
B

electrons flow from zinc rod to copper rod
C

zinc deposites at the zinc electrode and copper dissolves from copper rod
D

Current flow from zinc rod to copper rod

Solution

When $E_{ext} < 1.1 V$
(i) Electrons flow from zinc electrode to copper electrode,hence, current flows from copper to zinc electrode.
(ii) Zinc dissolves at anode and copper deposites at cathode.

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