(i) Cell 'A' has 
-2V and Cell 'B' has =1.1V which of the two
cell 'A' or 'B' will act as an electrolytic cell. Which electrode reactions
will occur in this cell?
(ii) If cell 'A' has = 0.5V and cell 'B' has =1.1V then what WUL be the
reactions at anode and cathode?
Answer:
(i) Cell 'B' will act as
electrolytic cell due to its lesser value of emf.
The electrode reactions will be
At cathode 
At anode 
If cell 'B' has higher emf, it
acts as galvanic cell.
Now it will push electrons into
cell 'A' In this case, the reactions will be
(At anode)
(At cathode)
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