Bromine (Br2) has a normal melting point of – 7.2°C and a normal boiling point of 59°C. The triple point of Br2 is – 7.3°C and 40 mm Hg, and the critical point is 320°C and 100 atm. a) Using the above information, sketch a phase diagram for bromine indicating all the points described above b) Under what temperature conditions can liquid bromine never exist?  c) What phase changes occur as the temperature of a sample of bromine at 0.10 atm is increased from – 50°C to 200°C?

Consider the phase diagram of kryptonite shown below. بلا P (atm) 10 20 30 40 50 60 70 T (deg. Celsius) As the temperature of kryptonite is decreased from 40° C to 20° C at 1 atm pressure, what phase change occurs? sublimation condensation O O melting O freezing O boiling

d• Using the phase diagram to the right, select all of the statements that are false. f Te Temperature (not to scale) Point G is the Critical Point. The substance is a supercritical fluid at Point F Decreasing the pressure of the substance at constant Temperature from point A, will result in vaporization Cooling the substance at Point F will induce condensation There is an equilibrium in the gaseous and liquid states at Point E. Increasing the temperature at constant pressure from Point A will results in two phase changes in the substance. Pressure (not to scale)

Use the References to access important values if needed for this question. Refer to the following phase diagram (not to scale!) for oxygen: 49.8 1.00 P atm 0.00150- 54.4 54.8 90.2 154.6 T Kelvin A sample of oxygen at a pressure of 1.00 atm and a temperature of 48.6 K is heated at constant pressure to a temperature of 99.9 K. Which of the following are true? Choose all that apply OThe gas initially present will solidify. O One or more phase changes will occur. The sample is initially a solid. O The sample is initially a liquid. O The final state of the substance is a gas. Previous Next

Water has a vapor pressure of 23.8 mm Hg at 25°C and a heat of vaporization of 40.657 kJ/mol. Using the Clausius-Clapeyron equation given below, determine the vapor pressure of water at 96°C.