Triple Point Definition
Which of the following best defines the triple point of a substance?
A
The specific temperature and pressure at which two of the three phases—solid, liquid, and gas—coexist in equilibrium.
B
The point on a phase diagram where phase equilibration occurs.
C
The point on a phase diagram where a supercritical fluid is found.
D
The specific temperature and pressure at which all three phases—solid, liquid, and gas—coexist in equilibrium.
E
The point on a phase diagram where the solid and gas phases are in equilibrium.
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