2
Electrochemistry
Unit
Unit
Unit
Unit2Unit
Electrochemistry
Rationalised 2023-24
32
Chemistry
Cu
Eext >1 1
e
–
Current
Cathode
+ve
Anode
–ve
Zn
Fig 2 2
Functioning of Daniell
cell 
when 
external
voltage Eext opposing the
cell potential is applied