High purity copper metal is obtained by

Options

A. Carbon reduction
B. Hydrogen reduction
C. Electrolytic reduction
D. Thermite process

Answer

### Step-by-Step Solution:

1. **Understanding the Process**: High purity copper metal is obtained through a process called electrolytic reduction. This method is used to refine copper from its ore or impure forms.

2. **Setting Up the Electrolytic Cell**: In the electrolytic cell, we use a solution of copper sulfate (CuSO₄) mixed with dilute sulfuric acid (H₂SO₄) as the electrolyte. This solution facilitates the movement of copper ions.

3. **Electrode Configuration**: The setup consists of two electrodes:
- **Anode**: This is the impure copper rod, which is connected to the positive terminal of the battery.
- **Cathode**: This is a pure copper rod, which is connected to the negative terminal of the battery.

4. **Electrolysis Process**: When the electric current is passed through the solution:
- At the anode (impure copper rod), oxidation occurs. The copper atoms from the impure rod lose electrons and are converted into copper ions (Cu²⁺), which dissolve into the electrolyte.
- At the cathode (pure copper rod), reduction occurs. The copper ions (Cu²⁺) from the solution gain electrons and are deposited as pure copper metal on the cathode.

5. **Formation of Anode Mud**: As the impure copper rod oxidizes, any impurities (other than copper) do not dissolve into the solution and instead collect at the bottom of the electrolytic cell as anode mud.

6. **Completion of the Process**: Over time, the impure copper rod will disintegrate completely, while the pure copper will build up on the cathode. This results in high purity copper metal being obtained.

7. **Conclusion**: The correct method for obtaining high purity copper metal is through electrolytic reduction.