The gas liberated when concentrated sulphuric acid is reated with copper

Options

A. `H_2`
B. `SO_3`
C. `H_2S`
D. `SO_2`

Explanation

To determine the gas liberated when concentrated sulfuric acid (H₂SO₄) reacts with copper (Cu), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this reaction are concentrated sulfuric acid (H₂SO₄) and copper (Cu).

2. **Write the Chemical Reaction**: When concentrated sulfuric acid reacts with copper, the chemical reaction can be represented as:
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