Daniel cell is electrochemical cell , which of the following statement is true about it ?

Options

A. Cations move toward zinc electrode
B. Current flows zinc electrode to copper electrode
C. Cations move toward copper electrode which is cathode
D. Electrons flow from copper electrode to zinc electrode

Answer

To determine which statement about the Daniel cell is true, we will analyze the components and reactions occurring in the cell.

### Step-by-Step Solution:

1. **Identify Components of the Daniel Cell**:
- The Daniel cell consists of two electrodes: an anode and a cathode.
- The anode is made of zinc (Zn), and the cathode is made of copper (Cu).

2. **Understand the Reactions at Each Electrode**:
- At the anode (zinc electrode), oxidation occurs. Zinc metal (Zn) loses two electrons to form zinc ions (Zn²⁺):
\[ \text{Zn} \rightarrow \text{Zn}^{2+} + 2e^- \]
- At the cathode (copper electrode), reduction occurs. Copper ions (Cu²⁺) in the solution gain two electrons to form copper metal (Cu):
\[ \text{Cu}^{2+} + 2e^- \rightarrow \text{Cu} \]

3. **Analyze the Movement of Electrons**:
- Electrons flow from the anode (zinc) to the cathode (copper). Therefore, the statement that electrons move from copper to zinc is incorrect.

4. **Determine the Movement of Ions**:
- Zinc ions (Zn²⁺) go into the solution from the anode, while copper ions (Cu²⁺) move from the solution to the cathode where they are reduced to copper metal.

5. **Evaluate the Given Statements**:
- **Statement 1**: Incorrect, as zinc does not move toward the zinc electrode; it oxidizes and goes into the solution.
- **Statement 2**: Correct, as copper ions (Cu²⁺) move toward the copper electrode (cathode) from the solution.
- **Statement 3**: Incorrect, as electrons move from zinc to copper, not the other way around.
- **Statement 4**: Incorrect, as it misrepresents the flow of electrons and ions.

### Conclusion:
The true statement about the Daniel cell is that copper ions (Cu²⁺) move toward the copper electrode (cathode) from the solution.