Shown Below Is a Phase Diagram for Sulfur (Not Drawn

question 81

Multiple Choice

Shown below is a phase diagram for sulfur (not drawn to scale) . Sulfur can exist in solid modifications, rhombic and monoclinic, denoted by S_R and S_M, respectively. Which of the following statements is incorrect?

• A) At pressures close to 1 atm, rhombic sulfur can be in stable equilibrium with liquid sulfur.
• B) Under ordinary atmospheric conditions (at sea level), sulfur does not sublime.
• C) This system has two triple points.
• D) At a given pressure, there is (at most) one temperature at which rhombic sulfur can exist in equilibrium with monoclinic sulfur.
• E) None of these statements is incorrect.

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