The metal refined-electolytically is

Options

A. Zn
B. Na
C. Cu
D. Fe

Answer

**Step-by-Step Solution:**

1. **Understanding Electrolytic Refining:**
- Electrolytic refining is a process used to purify metals using electrolysis. It involves the use of an electric current to drive a chemical reaction that separates the metal from impurities.

2. **Identifying Metals Commonly Refined Electrolytically:**
- The metals that are commonly refined using this method include copper, gold, and silver. These metals are often found in impure forms and require purification for industrial use.

3. **Process of Electrolytic Refining:**
- In electrolytic refining, the impure metal is placed at the anode (positive electrode), while a pure metal (often the same type of metal being refined) is placed at the cathode (negative electrode).
- For example, in the case of copper refining, impure copper is used at the anode, and pure copper is deposited at the cathode.

4. **Current Flow and Metal Transfer:**
- When an electric current is passed through the solution, the impure metal at the anode dissolves into the electrolyte solution.
- Meanwhile, pure metal ions from the solution are reduced and deposited onto the cathode.

5. **Collection of Impurities:**
- The impurities that do not dissolve remain at the bottom of the anode and are collected as anode mud. This process effectively separates the pure metal from its impurities.

6. **Conclusion:**
- Therefore, the metals that are refined electrolytically include copper, gold, and silver, with copper being the most commonly refined metal using this method.