The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?
Correct answer: D. Gibbs-Duhem-Margules
- A. Van Laar
- B. Margules
- C. Gibbs-Duhem
- D. Gibbs-Duhem-Margules
Explanation
For a binary vapour-liquid system at constant temperature and pressure, the relation between the logarithmic changes in partial pressures and liquid compositions is the Gibbs-Duhem-Margules equation. Van Laar and Margules are activity-coefficient models, not the name of this general thermodynamic relation.
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