Show by chemical equations how roasting can convert sulphide ore into an oxide?

Explanation

To show how roasting can convert sulfide ore into an oxide, we can represent the process using chemical equations. Roasting involves heating the sulfide ore in the presence of air (or oxygen), which leads to the formation of metal oxides and the release of sulfur dioxide gas.

### Step-by-Step Solution:

1. **Definition of Roasting**:
Roasting is the process of heating sulfide ores in the presence of air or oxygen. This process helps in converting the sulfide ores into their respective metal oxides.

2. **Example 1 - Copper(I) Sulfide (Cu₂S)**:
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