The phase diagram of NH₃ can be characterized by the following information. The normal melting and boiling temperatures are 195.2 and 239.82 K, respectively; the triple point pressure and temperature are 6077 Pa and 195.41 K, respectively. The critical point parameters are 112.8 × 10⁵ Pa and 405.5 K. Make a sketch of the P–T phase diagram (not necessarily to scale) for NH₃. Place a point in the phase diagram for the following conditions.

State which and how many phases are present.

a. 195.41 K, 9506 Pa

b. 195.41 K, 6077 Pa

c. 245.45 K, 101,325 Pa

d. 415 K,

105 × 105 Pa

e. 185.5 K, 6077 Pa