Question

11. List the order of phase changes that would occur based on the phase diagram of water under the following circumstances: critical point liquid Pressure (atm) 0.1- solid vapour (gas) triple point 0.0012 / 100 200 300 400 500 Temperature (K) 600 700 a. Water vapor originally at 200 atm and 150°C is slowly allowed to expand at a constant temperature until the final pressure is 0.005 atm. b. Water originally at 100.0°C and 0.50 atm is cooled at a constant pressure until the temperature is -100°C.

Answer 1

C423K, 2001) (423x, 2007 _ + Critter reuticon point Pressure (atm) liquid vaporization a 3MO 1 (3136, 0.50 arm) paint Vapau (gas) solid Triple t o nusta (423K, 0.005 am) - 100 200 300 400 500 600 700 Temperature (K) → Initial Puessure = 200 atm ; Temperature : 1500 = 150 + 273 - 423 K final presswe = 0.005 atm from graph, as we decrease the pressure, at constant pre temperature, phase changes i from Iliquid to Vapour (6) Gnitial Temperature - 100C = 100 + 273 - 373K & Initial pressure - 0.5o atm. final Temperature = -100ºC = -100 + 273 - 173 K From graph, As we decrease the tempesatore, at constant pressure phase changes is from | vapour (gas) → liquid → solid