Henry’s Law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid (at constant temperature). C=kH⋅PC = k_H \cdot PC=kH⋅P
Where:
- CCC = concentration of gas in liquid
- kHk_HkH = Henry’s constant (depends on temperature & gas-liquid pair)
- PPP = partial pressure of gas
Applications in Chemical Engineering:
- Gas absorption (e.g., CO₂ absorption in water).
- Carbonated beverages (dissolving CO₂ in soft drinks).
- Environmental engineering (oxygen solubility in water bodies).
- Design of scrubbers & absorbers
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