What is the significance of Hanry's law constant `K_(H)` ?

Explanation

### Step-by-Step Solution:

1. **Understanding Henry's Law**:
- Henry's Law states that the amount of gas that can be dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid.
- Mathematically, this can be expressed as:
\[ P = K_H \cdot \chi \]
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