Refining of impure copper with zinc impurity is to be done by electrolysis using electrods as-

Options

A. Pure copper pure zinc
B. Pure zinc Pure copper
C. Pure copper Impure copper
D. Pure zinc Impure zinc

Answer

To solve the question regarding the refining of impure copper with zinc impurity through electrolysis, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrolysis**:
- Electrolysis is a chemical process that uses electrical energy to drive a non-spontaneous reaction. In this case, we are refining copper.

2. **Setting Up the Electrolytic Cell**:
- We will set up an electrolytic cell that consists of two electrodes: the anode and the cathode.
- The electrolyte used in this process is a solution of copper sulfate (CuSO₄) mixed with sulfuric acid (H₂SO₄).

3. **Identifying the Electrodes**:
- The **anode** will be made of impure copper, which contains zinc as an impurity.
- The **cathode** will be made of pure copper.

4. **Electrochemical Reactions**:
- At the **anode** (where oxidation occurs), the impure copper will lose electrons and dissolve into the solution. The reaction can be represented as:
\[ \text{Cu (s)} \rightarrow \text{Cu}^{2+} (aq) + 2e^- \]
- The zinc and other impurities will either remain in the anode or settle down as anode mud.

5. **Deposition at the Cathode**:
- At the **cathode** (where reduction occurs), the copper ions from the solution will gain electrons and deposit as pure copper on the cathode. The reaction can be represented as:
\[ \text{Cu}^{2+} (aq) + 2e^- \rightarrow \text{Cu (s)} \]

6. **Final Outcome**:
- Over time, pure copper will accumulate on the cathode, while the impurities will settle at the bottom of the electrolytic cell as anode mud.

### Conclusion:
- The refining of impure copper with zinc impurity is achieved by using impure copper as the anode and pure copper as the cathode in an electrolytic cell containing copper sulfate and sulfuric acid.