How are Henry's Law constants determined and applied?

Henry's Law: p_i = H_i * x_i for dilute solutions of gas in liquid. Henry's constant H depends on temperature and solvent. Determination: experimental measurement of gas solubility at known partial pressures, or correlation (e.g., from molecular properties). Temperature dependence: ln(H) = A + B/T (typically increases with T, meaning lower solubility). Applications: absorption column design, dissolved gas calculations, environmental partitioning, and VLE for dilute volatile components. Different conventions exist (pressure/mole fraction, molality-based), so units must be carefully tracked.