According to the phase diagram of carbon, what pressure and temperature conditions, if any, are needed in order for diamond to be the stable phase?
A)Low pressure, low temperature
B)Low pressure, high temperature
C)High pressure, low temperature
D)High pressure, high temperature
E)Actually, diamond is not stable under any conditions.

Question

Quizplus · Accepted Answer

According to the phase diagram of carbon, the stable phase of diamond exists at high pressure and low temperature. At atmospheric pressure, graphite is the stable phase of carbon, but under high pressure conditions, diamond becomes the energetically favored phase.

According to the Phase Diagram of Carbon, What Pressure and Temperature