Question

At the triple point on a phase diagram, what state(s) of matter exist?
Group of answer choices

A. Liquid ONLY

B. None of the 3 states of matter (Solid, Liquid or Gas) exist at this point.

C. Solid, Liquid and Gas

D. Solid and Liquid

Answer 1

At the triple point on a phase diagram, the state(s) of matter exist is option C: Solid, Liquid and Gas.

What states of matter exist at the triple point?

In a state of pressure and temperature of a given triple point, all three phases (known to be the solid, liquid and gas state) are seen to often exist in equilibrium.

Note that the triple point is said to be one that stands for  the lowest pressure in which a liquid phase can live in equilibrium with that of the solid or vapor.

Hence, the statement of At the triple point on a phase diagram, the state(s) of matter exist is option C: Solid, Liquid and Gas is true.

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