Concept explainers
Benzene has a melting point of 5.53 °C and a boiling point of 80.09 °C at atmospheric pressure. Its density is 0.8787 g/cm3 when liquid and 0.899 g/cm3 when solid; it has
(1) First, increase T to 585 K while keeping P constant.
(2) Next, decrease P to 38.5 atm while keeping T constant.
(3) Then, decrease T to 278.66 K while keeping P constant.
(4) Finally, decrease P to 0.0025 atm while keeping T constant.
What is your starting phase, and what is your final phase?
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