Final Spring 06 Key[1] - Ph ysica l a nd C h e m ica l B e...

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Unformatted text preview: Ph ysica l a nd C h e m ica l B e h av i o r o f Petrol e um F l uids 1 F inal E xa m i n at io n , 3 Hour s C lo sed B oo k & N ot es It will be in y our be st interest to a ttempt all the question s. Ple as e budget y our tim e accordingl y. Problem 1 (20 point s ) A binary gas mixture containing methane and ethane has a specific gravity of 0 . 75 relative to air. Cal c ulate the composition of the gas i n mole fractions. Atomic weight of carbon = 12. Atomic weight of hydrogen = 1. )'1 (li l t) f- Y 1- (Mz) ==, n z- 9 ~ ( ~- Y2 . )( ! (" D L f) f- yz- ('3 ,07) :: : , 7~lZ 9 ) It ,cq It ~oLf y ~ +- 3( . ) , ( 7)/?- . := ILf,03 y~- ~~ 71 Q<-='" . L/07. 0 ] )t ,- l- I ~( ) ? o ( Y I- =: , ~9? 1 2/ , 7 c;- I L j0 7 0 Problem 2 (20 points) Pure liquid n-butane is confined in a PVT cell at a temperature of 200 o f and a pressure of 400 psia. The liquid is then flashed at a constant temperature to a pressure of 100 psia. The vapor pressure data for n-butane are as follows: Temperature Vapor Pressure i l l (psia) ! 50 22 100 50 150 102 20 _ 200 250 320 300 500 306 (T c ) 551 (Pc) ~e- ?V I! ( b e C )~ L /a . ~ / ci I t-t . 1 l e ~ ~ 2eJ OC >F o-v- J jOJ. ) f S; C\ . I /-- /d Y tA- ~e ~ t- / uv t- uYC > F ~ UV z: > f 5 ; a .. 2- P 4- o~ cer v Id LX'- ' ST . o J- z e;o o r~ /Q)P< ; IG \ .. c7 " Y ' / y f ) t>- ~ b- V ' J i dex/ ~~- r t-- e p < / e~5 u v e ' '5 ~ e J( J L J fC- f?- uo-- (crv- t7 'e ,. .') I ) v i / " e . L;V ' \ .- - b. Sketch the Pressure...
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Final Spring 06 Key[1] - Ph ysica l a nd C h e m ica l B e...

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