Question

In a phase diagram the critical point is a

A. set of temperature and pressure conditions under which the substance is a particular state of matter, such as solid, liquid, or gas.
B. set of temperature and pressure conditions at which the substance is in equilibrium between two states of matter.
C. temperature and pressure at which the substance exists as three states of matter in equilibrium.
D. temperature and pressure beyond which the substance no longer exists as a liquid or gas but as a supercritical fluid.

Answer 1

D

Step-by-step explanation:

When the pressure and temperature are raised high enough a substance is said to be a supercritical fluid,

Supercritical fluids exist in a state where a distinct gas and liquid phase are not present