// multi-utility computation suite · offline · instant · precise
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sci.vaporliquid-equilibrium-Raoult Calculator
Calculates vapour-liquid equilibrium using Raoult's law: y_i × P = x_i × Pᵢ_sat (ideal liquid, ideal vapour), for bubble and dew point calculations. Raoult's law is valid only for ideal mixtures — ethanol-water deviates positively (maximum pressure azeotrope at 95.6% ethanol, 78.15 °C, 1 atm).
Inputs
P Total Kpa
Force per unit area (Pa). Atmospheric pressure at sea level: 101,325 Pa. Check whether gauge or absolute pressure is required.
Psat A Kpa
Force per unit area (Pa). Atmospheric pressure at sea level: 101,325 Pa. Check whether gauge or absolute pressure is required.
Psat B Kpa
Force per unit area (Pa). Atmospheric pressure at sea level: 101,325 Pa. Check whether gauge or absolute pressure is required.
X A
Reference formula or conversion factor shown for context.