Interpretation: The effect of increased temperature on the freezing point is to be determined.
Concept introduction:
A phase diagram is a diagram indicating the limits of stability of the different phases of a chemical system at equilibrium, with regard to factors such as composition and temperature.
Answer to Problem 80A
The freezing point increases marginally with increased pressure.
Explanation of Solution
Experimental measurements of solid-liquid equilibrium are made by cooling a liquid combination with a known composition and constantly measuring the temperature as a function of time.
With more pressure, the freezing point does, on average, rise, but very marginally. The vapor pressure rises as the temperature of a confined liquid rises. The freezing point rises because of the particles' higher kinetic energy in the warmer liquid.
Chapter 13 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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