Indicate the principle behind the method used from refining of zinc ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Refining Process**: The refining of zinc is primarily done through a method known as electrolysis. This method is based on the principle of electrolysis, which involves the use of electrical energy to drive a non-spontaneous chemical reaction.

2. **Setup of Electrolysis**: In the electrolysis setup, there are two electrodes: an anode and a cathode. The anode is made of impure zinc, while the cathode is a pure zinc strip. The electrolytic solution used is typically a zinc salt solution, such as zinc sulfate (ZnSO4).

3. **Oxidation at the Anode**: When electric current is passed through the electrolytic solution, the impure zinc at the anode undergoes oxidation. This means that the zinc atoms lose electrons and dissolve into the solution as zinc ions (Zn²⁺).

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