A) The substance sulfur dioxide has thefollowing properties:
| normal melting point: | 200.4 K |
| normal boiling point: | 263.1 K |
| triple point: | 1.7×10-3 atm,197.6 K |
| critical point: | 78 atm, 430.7 K |
A sample of sulfur dioxide at a pressure of 1.00atm and a temperature of 253.5 K is cooled atconstant pressure to a temperature of 192.3 K.Which of the following are true?
Choose all that apply
The solid initially present will vaporize.
The sample is initially a liquid.
The final state of the substance is asolid.
One or more phase changes will occur.
The final state of the substance is aliquid.
B) The substance xenon has the followingproperties:
| normal melting point: | 161.3 K |
| normal boiling point: | 165.0 K |
| triple point: | 0.37 atm, 152.0 K |
| critical point: | 57.6 atm, 289.7 K |
A sample of xenon is initially at a pressure of63.9 atm and a temperature of178.0 K. The pressure on the sample is reduced to0.370 atm at a constant temperature of178.0 K. Which of the following are true?
Choose all that apply
The sample is initially a liquid.
The liquid initially present will solidify.
One or more phase changes will occur.
The final state of the substance is asolid.
The final state of the substance is a gas.
