Two metals A and B have reduction potential values `-0.76 V and + 0.34 V` respectively. Which of these will liberate `H_(2)` from dil.`H_(2)SO_(4)` ?

Explanation

To determine which metal, A or B, will liberate hydrogen gas (H₂) from dilute H₂SO₄, we need to analyze their reduction potentials and how they relate to the reduction of hydrogen ions (H⁺) in the solution.

### Step-by-Step Solution:

1. **Identify the Reduction Potentials**:
- Metal A has a reduction potential of \( E_A = -0.76 \, V \).
- Metal B has a reduction potential of \( E_B = +0.34 \, V \).

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