A variable, opposite external potential`(E_(ext)` is applied to the cell :`Zn|Zn^(2+)(1M)||Cu^(2+) (1M)|Cu, ` of potential 1.1 V.respectively electrons flow from :

Options

A. anode to cathode and cathode to anode
B. cathode to anode and anode to cathode
C. cathode to anode in both cases
D. anode to cathode in both cases

Explanation

To solve the question regarding the flow of electrons in the electrochemical cell `Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu` when an external potential `E_ext` of 1.1 V is applied, we can follow these steps:

### Step 1: Identify the Standard Electrode Potentials
The standard electrode potential (E°) for the given half-reactions are:
- For the zinc half-reaction:
\[ Zn^{2+} + 2e^- \rightarrow Zn \quad (E^\circ = -0.76 \, V) \]
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