{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 2 - Equations of State How far can we push...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Equations of State – How far can we push it? (16.3,16.4) Consider the vdW equation of state: ( ) 2 a P V b RT V + = ( ) ( ) 2 2 PV a V b RTV + = 3 2 0 RT a ab V b V V P P P + + = ( ) Cubic equation in V 3 roots ( ) 3 2 0 PV RT bP V aV ab + + = Fig. 16.7 Figure shows that below the critical point, liquid and gaseous phase of CO 2 can coexist. c So, at a given T<T , as you compress the gas, (G A) you reach a point where V will change with essentially no increase in P (A D), until all of the gas liquifies. Then, further compression requires a hug e increase in P (D L).
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon