Formation of metallic copper from sulphide ore in te normal thermometallurgical process essentially involves which of the following reactions

Options

A. `Cu_(2)S+(3)/(2)O_(2) to Cu_(2)O+SO_(2), " " Cu_(2)O+C to 2Cu+CO`
B. `Cu_(2)S+(3)/(2)O_(2)to Cu_(2)O+SO_(2), " " 2Cu_(2)O+Cu_(2)S to 6Cu+SO_(2)`
C. `Cu_(2)S+2O_(2) to CuSO_(4), " " CuSO_(4)+Cu_(2)S to 3Cu+2SO_(2)`
D. `Cu_(2)S+(3)/(2)O_(2)to Cu_(2)O+SO_(2), " " Cu_(2)O+CO to 2Cu+CO_(2)`

Answer

To determine the formation of metallic copper from sulphide ore in the normal thermometallurgical process, we need to analyze the reactions involved in the extraction of copper.

### Step-by-Step Solution:

1. **Understanding the Ore**: The primary sulphide ore of copper is chalcopyrite (CuFeS2) or chalcocite (Cu2S). The extraction process typically starts with roasting the sulphide ore to convert it into copper(I) oxide (Cu2O) and sulfur dioxide (SO2).

2. **Roasting Reaction**:
- The roasting of copper(I) sulfide (Cu2S) can be represented as:
\[ 2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2 \]
- This reaction produces copper(I) oxide and sulfur dioxide.

3. **Reduction of Copper Oxide**:
- The next step involves the reduction of copper(I) oxide (Cu2O) to metallic copper (Cu). This can be achieved by reacting it with copper(I) sulfide (Cu2S):
\[ Cu_2O + Cu_2S \rightarrow 4Cu + SO_2 \]
- This reaction produces metallic copper and sulfur dioxide gas.

4. **Blister Copper Formation**:
- The intermediate product formed during this process is known as blister copper, which is an impure form of copper containing bubbles of SO2 gas.

5. **Conclusion**:
- Among the given options, the reaction that correctly represents the formation of metallic copper from sulphide ore is:
\[ \text{Copper Oxide} + \text{Copper Sulphide} \rightarrow \text{Copper} + \text{SO}_2 \]
- Therefore, the correct answer is **Option 2**.