Sulfur exhibits two solid phases, rhombic and monoclinic. Use the accompanying phase diagram for sulfur to answer the following questions. (The phase diagram is not to scale.)
A. How many triple points are in the phase diagram?
B. What phases are in equilibrium in each of the triple points?
C. What is the stable phase at 1 atm and 100oC?
D. What are the normal melting point and normal boiling point of sulfur?
E. Which is the densest phase?
F. At a pressure of 1.0 x 10-5 atm, can rhombic sulfur sublime?
G. What phase changes occur when the pressure on a sample of sulfur at 100oC is increased from 1.0 x 10-8 atm to 1500 atm?
