Given the data table below for a binary mixture at 298.15 K in vapor-liquid equilibrium. What can you conclude about the system?
A. The system will have an azeotrope.
B. The system shows positive deviations from Raoult’s Law.
C. The liquid phase is well modeled by the ideal solution.
D. The excess volume for this system will be positive across all compositions.
E. None of the above
A. Incorrect. This seems very unlikely, since the liquid-phase composition continually lags the vapor-phase composition.
B. Correct. The system pressure is sometimes above both pure-component vapor pressures.
C. Incorrect. The system pressure is sometimes above both pure-component vapor pressures, indicating positive deviations from Raoult’s Law.
D. Incorrect. You have no way of determining this from the data given.
E. Incorrect. One statement is correct.
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