Which of the following reaction(s) takes place in the Bessemer converter for the extraction of Cu?

Options

A. `2CuFeS(2)+4O_(2) to Cu_(2)S+2FeO+3SO_(2)`
B. `Cu_(2)S+(3)/(2)O_(2) to Cu_(2) O+SO_(2)`
C. `Cu_(2)S+2Cu_(2)O to 6Cu+SO_(2)`
D. `FeO+Sio_(2) to FeSiO_(3)`

Answer

To determine which reactions take place in the Bessemer converter for the extraction of copper, we need to analyze the given reactions and identify those that are relevant to the process.

### Step-by-Step Solution:

1. **Understanding the Bessemer Converter**:
The Bessemer converter is a vessel used for the extraction of metals, particularly copper, by blowing air through molten metal to oxidize impurities.

2. **Identifying the Relevant Reactions**:
We have four reactions to consider:
- **Reaction 1**: \( \text{Cu}_2\text{S} + \frac{3}{2} \text{O}_2 \rightarrow \text{Cu}_2\text{O} + \text{SO}_2 \)
- **Reaction 2**: \( \text{Cu}_2\text{S} + 2 \text{Cu}_2\text{O} \rightarrow 2 \text{Cu} + \text{SO}_2 \)
- **Reaction 3**: \( \text{FeO} + \text{SiO}_2 \rightarrow \text{FeSiO}_3 \) (Formation of slag)
- **Reaction 4**: \( \text{Cu}_2\text{S} + \text{O}_2 \rightarrow \text{Cu} + \text{SO}_2 \) (Self-reduction)

3. **Analyzing Each Reaction**:
- **Reaction 1**: This reaction involves the oxidation of copper(I) sulfide (\( \text{Cu}_2\text{S} \)) to copper(I) oxide (\( \text{Cu}_2\text{O} \)) and sulfur dioxide (\( \text{SO}_2 \)). This reaction is relevant as it involves the oxidation process.
- **Reaction 2**: This reaction describes a self-reduction process where copper(I) sulfide reacts with copper(I) oxide to produce copper and sulfur dioxide. This is also relevant as it leads to the formation of elemental copper.
- **Reaction 3**: This is a slag formation reaction and does not directly contribute to the extraction of copper itself, but it is part of the overall process to remove impurities.
- **Reaction 4**: This reaction shows the direct reduction of copper(I) sulfide to copper, which is also relevant to the extraction process.

4. **Conclusion**:
The reactions that take place in the Bessemer converter for the extraction of copper are:
- Reaction 1
- Reaction 2
- Reaction 4

Thus, the correct options for the reactions that take place in the Bessemer converter for the extraction of copper are the second, third, and fourth reactions.

### Final Answer:
The reactions that take place in the Bessemer converter for the extraction of copper are:
- Reaction 2: \( \text{Cu}_2\text{S} + 2 \text{Cu}_2\text{O} \rightarrow 2 \text{Cu} + \text{SO}_2 \)
- Reaction 4: \( \text{Cu}_2\text{S} + \text{O}_2 \rightarrow \text{Cu} + \text{SO}_2 \)