Give reasons:
On the basis of `E^@` values. `O_2` gas should be libersted at anode but it is `Cl_2` gas which is liberated in the electrolysis of aqueous NaCl.

Explanation

To understand why Cl₂ gas is liberated instead of O₂ gas during the electrolysis of aqueous NaCl, we can analyze the situation step by step based on standard electrode potentials (E° values) and the concept of overpotential.

### Step-by-Step Solution:

1. **Understanding Electrolysis**:
- Electrolysis involves the decomposition of a compound into its elements using electrical energy. In the case of aqueous NaCl, the solution contains Na⁺ ions, Cl⁻ ions, H⁺ ions, and OH⁻ ions.

2. **Identifying Possible Reactions at the Anode**:
...