JEE Main 2015 Chemistry question
A variable, the opposite external potential is applied to the cell , of potential V. When V and V, respectively electrons flow from
Answer: (2)
Solution
When the opposing external potential is less than the cell emf, the cell still drives itself: it works as a galvanic cell, zinc is oxidised at the anode and copper deposited at the cathode, and electrons flow through the external wire from the anode (Zn) to the cathode (Cu). When exceeds 1.1 V
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