What should be the considerations during the extraction of metals by electrochemical method?

Explanation

**Step-by-Step Solution:**

1. **Reactivity of Metals:**
- When extracting metals using electrochemical methods, the first consideration is the reactivity of the metals involved. Metals that are highly reactive tend to react with water, which can complicate the extraction process.
- If a metal reacts with water, it is preferable to perform electrolysis on its purified molten ore rather than using an aqueous solution. This is because the presence of water can lead to unwanted side reactions that may hinder the extraction process.

2. **Suitability of Electrodes:**
- The second consideration is the suitability of the electrodes used in the electrochemical process. The electrodes must be chosen carefully to ensure they do not react with the products formed during electrolysis.
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