1.A phase diagram of a pure compound has a triple point at 27°C and 65 mm Hg, a

Question

1.A phase diagram of a pure compound has a triple point at 27°C and 65 mm Hg, a normal melting point at 24 °C, and anormal boiling point at 118 °C. Sketch the phase diagram forthis substance. Which of the following statements regardingthis compound are CORRECT? [Be careful, more than one answer may becorrect.]
a.    The density of the solid is greater than thatof the liquid.   
b.    Sublimation occurs if the temperature of thesolid phase is increased from 11 °C to 34 °C at a constantpressure of 61 mm Hg.
c.    Evaporation occurs if the pressure is raisedfrom 65 mm Hg to 820 mm Hg at a constant temperature of 24°C.

Explanation / Answer

B

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