The following questions refer to the phase diagram below.
-Which of the following values of temperature and pressure most closely correspond to the triple point of this substance?

Question

The following questions refer to the phase diagram below. 
-Which of the following values of temperature and pressure most closely correspond to the triple point of this substance?

Quizplus · Accepted Answer

The triple point of a substance is the unique set of conditions at which all three phases (solid, liquid, and gas) coexist in equilibrium. For many substances, including common ones like carbon dioxide, the triple point occurs at a specific low temperature and pressure. The values given in option C (-57°C and 740 torr) are close to the known triple point conditions for carbon dioxide.

The Following Questions Refer to the Phase Diagram Below