A) what is the main difference between the isotherms above and d below the criti

Question

A) what is the main difference between the isotherms above and d below the critical temperature Tc? Which equation can describe their behavior perfectly and which can describe them only approximately? Why?

B) If you know one isotherm below the critical Tc, how could you get some others?

C) Mix 1000 identical blueberries with 100 identical blackberries. What is the change of entropy? How dose their entropy change, if you put them in the space shuttle, where the volume that they occupy grows 5 times. Why do we not need to use fugacity?

D) Why is it harder to find crystal enthalpy in covalent and metalic crystals then in ionic crystals? Is crystal enthalpy larger in crystal made of benzene or naphthalene?

Explanation / Answer

A) Above the critical temperature, a liquid cannot be formed by an increase inpressure, even though a solid may be formed under sufficient pressure. Whereas below the critical temperature, if required pressure is applied, liquid forms. Van der waal's equation describes the behaviour perfectly because it takes the part below the criticl temperature into consideration too as it is a third degree equation.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.