Question

8-15 The virial PuT relation for CH4 at 20°C is given by Pu/RT Z 1-2.02x 103P+3.72x10p +43.6x1012 Pp* where P is expressed in atmospheres a. Determine analytically the fugacity coefficient for CH4 at 20° and 183 atm, employing the virial equation of state. b. Determine the fugacity coefficient from the Lee-Kesler three-parameter data.

Answer 1

Viial 2X know inal at 2atm Now and se dP 123 - 2 I2 3 tap f2:0110-3+2321 2-4 lo-2p 3 2.02X10 )23 43.4x 16 -12 41 -3 ln 369-66Kio+62-22954 Xie -3 [2 2244 X 10 ** - 2.9.14606x i-3

an e Te 190. 4.9.5 bar Te 20'c 2g 3 1k 18 3 atmz 19.425 ban 1. S38 403 5 2 Pa frer Lee - kele At T S38 in tey o lation tables f4.a35 we by We lnow kat - ,( -

No u have e pasefarm 3 intespolakion. stepi do calculata intep olate in kupolate , ot Tr, - lo6 to;th inbeupolete above huo valuer at T i 2 at Ty Pr s 2. 1S32 n(tat S, Tr,2. NoW n() -0157 -0t) in Ct) [-6-1m) 4.03-3 -0.13420 11 Anatf 3 O2 6 4.03 5-3 o.08 2 l02 112

n (0-139) 3-15 o1 g1125)--013150) 5812モるて1 cedwre imil 112 7 O 2 167 2 04 62 O , at Pr 3 fr 5 16 r2

n 138- O 14046 25 O13949 S-o4Gs Now In n¢w o22 618S+0.012XO400S -0.1210807007 0. 88596
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