Calculate the solubility of `H_(2)` in water at `25^(@)C` if its partial pressure above the solution is 1 bar. Given that Henry's constant for `H_(2)` in water at `25^(@)C` is 71.18 kbar.

Explanation

To calculate the solubility of hydrogen gas (H₂) in water at 25°C when the partial pressure of H₂ above the solution is 1 bar, we will use Henry's Law. Henry's Law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of that gas above the liquid.

### Step-by-Step Solution:

1. **Identify Given Values:**
- Partial pressure of H₂ (P) = 1 bar
- Henry's constant (K_H) for H₂ in water at 25°C = 71.18 kbar

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