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Phase Diagram

Q. Ice floats on water. For most other substances, however, the solid sinks in the liquid. Classify each of these statements based on whether they describe water or most other substances.

Solved • Apr 30, 2020

Phase Diagram

Q. The phase diagram for carbon is shown. Starting from the lower triple point, what action would produce liquid carbon? a) raise the temperature b) lower the temperature c) lower the temperature and raise the pressure d) raise the temperature and raise the pressure e) raise the pressure f) raise the temperature and lower the pressure

Solved • Apr 30, 2020

Phase Diagram

Q. The phase diagram for carbon is shown. Which phase is stable at 10^5 atm and 1000 K? a) diamond b) liquid c) gas d) graphite

Solved • Apr 30, 2020

Phase Diagram

Q. The phase diagram for carbon is shown. Which phases are present at the upper triple point? a) gas b) graphite c) diamond d) liquid

Solved • Apr 30, 2020

Phase Diagram

Q. At roughly what pressure, P, and temperature, T, will diamond, graphite, and liquid carbon all exist in equilibrium? Which solid form of carbon is more dense? a) graphite b) diamond

Solved • Apr 30, 2020

Phase Diagram

Q. Consider the phase diagram for carbon dioxide. In what phase is CO2 at 4 atm and -10 °C? a) liquid b) gas c) solid Starting from the same point, 4 atm and -10 °C, what phase change would eventually result from an increase in pressure? a) sublimation b) melting c) freezing d) condensation e) vaporization f) deposition

Solved • Apr 30, 2020