Which of the following statement is true for the electrochemical Daniell cell ?

Options

A. electrons flows from copper electrode to zinc electrode.
B. Current flows from zinc electrode to copper electrode.
C. Cations moves towards copper electrodes.
D. cations moves towards zinc electrode.

Explanation

To determine which statement is true for the electrochemical Daniell cell, we will analyze the options provided based on the principles of electrochemistry.

### Step-by-Step Solution:

1. **Understanding the Electrochemical Daniell Cell**:
- The Daniell cell consists of two half-cells: one containing zinc (Zn) and the other containing copper (Cu).
- The zinc electrode acts as the anode (oxidation occurs here), and the copper electrode acts as the cathode (reduction occurs here).

2. **Identifying the Reactions**:
- At the anode (zinc electrode), zinc undergoes oxidation:
\[ \text{Zn} \rightarrow \text{Zn}^{2+} + 2e^{-} \]
- At the cathode (copper electrode), copper ions undergo reduction:
\[ \text{Cu}^{2+} + 2e^{-} \rightarrow \text{Cu} \]

3. **Electron Flow**:
- Electrons flow from the anode (zinc) to the cathode (copper). Therefore, the flow of electrons is from the zinc electrode to the copper electrode.

4. **Current Flow**:
- The conventional current flows in the opposite direction to electron flow. Thus, current flows from the copper electrode to the zinc electrode.

5. **Movement of Cations**:
- In the Daniell cell, cations (Zn²⁺) produced at the anode move towards the cathode (copper electrode) to maintain charge neutrality.
- Therefore, cations move towards the copper electrode.

6. **Evaluating the Options**:
- **Option A**: "Electron flows from copper electrode to zinc electrode" - **Incorrect** (electrons flow from zinc to copper).
- **Option B**: "Current flows from zinc electrode to copper electrode" - **Incorrect** (current flows from copper to zinc).
- **Option C**: "Cation moves towards copper electrode" - **Correct** (cations move towards the cathode).
- **Option D**: "Cation moves towards zinc electrode" - **Incorrect** (cations do not move towards the anode).

### Conclusion:
The true statement for the electrochemical Daniell cell is **Option C: Cation moves towards copper electrode**.

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