Which of the following statements is false?

A. When a binary mixture is at its bubble point, it contains almost all liquid and the first bubble of vapor.
B. When a binary mixture is at a pressure above its bubble point at that composition, it will be a single liquid phase.
C. When a binary mixture is at a temperature below its dew point at that composition, it will be a single liquid phase.
D. When a binary mixture is at a pressure between its bubble point and dew point at that composition, it will be contain both a liquid and vapor phase.
E. None of the above are false.


A. Incorrect. This is true. This is the definition of (and reason for the name of) the “bubble” point.
B. Incorrect. This is true. You may be confusing temperature and pressure. When the pressure is above the bubble-point pressure, only a liquid phase remains.
C. Incorrect. This is true. You may be confusing temperature and pressure. When the temperature is below the dew-point temperature, only a liquid phase remains.
D. Incorrect. This is true. Refer to any Pxy plot in Chapter 10 to see this.
E. Correct. Each statement is true.

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