PChemexam061 - NAME and Seetien Ne Che-misty 391 Pal 29:36...

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Unformatted text preview: NAME and Seetien Ne. Che-misty 391 Pal] 29:36 Exam I (Manda? September 13) 1F Paints) *#***$**t**t*$ D0 5 But Dffitttttttaqqam a}. Why is. the internai energy},r of an ideal gas not a fimefian of its volume? MM»; oflwam Wjao 7%“; gay/'75; Wf WWW: W b]. Is the square rent of the pressure an intensive quantity”? Explain. gm. 71m film/ha f5 dafwffie (ZPKWMf 6’3 MILme 7‘12 wfwé") M 7%" W” e]. What does the zemeth law efthermodynamies permit ane ta do? 3%M e. WWJL NAME and Section No. d}. Define the term state fimction in terms of its mathematical properties. l(There are several to choose from}. Exec? Giff/emu has»? 266774 {a 94% flaan/MGL 07 (Jim. {of agar? W e). Are there examples Where work can be treated as a state function? If so, give an example. yea. cit} : it; eiw 53 Gcfa'né-rfi-b (cilia) Tho dUiofll=dM f). For a reversible adiabatic ideal gas expansion does the energy increase, decrease, or remain the same? What happens to the temperature? Give equations to support your HJ’ISWIE’I‘. decfmhc 3:0 wflmm Gill/>0 Ilka”! 112:3 wk/‘ZO flU'LO i win cueg+wtw dujcgdf {Ev/)0 JUéO dTCO NAME and Seetian No. 2- (25 points) Paracertain gas (5%TL = A+BT+2aE{T2V} and (53%VL = mart”). A. Write an expreaeien for dU in terms of T and V as independent variables and Show that dU is exact. aft} : 3) av HM) Orv“ at" y CW T w w la. mar +£ngV W1 3/ a M 2+2; EKMEHJFV) TWL WWW TW‘ 125*“? 31;, .QXGCII". B. Evaluate til-U far a change fmm 5"ij to TFVI alang the path Trip: e+ Talia; _; 1“sz _ Would you get a (tifferent answer along another path? Exp-Iain. T; f *‘t 0”” .: A+3T+ifl th‘ ft”: ( T2 ;] JV} 73V; H F Wm (H) :N‘ «a (vi-W NAME and Section No. 3. {25 points) Evaluate the work done on an ideal gas for the two processes A. Pm irreversible expansion against a fixed pressure, pa, from VI to VJ, (with VJ, :- K }_ B. An isothermal reversible expansion from If to VJr where the final pressure is the same pressure as in part A. C. Which processes yields more work from the system? “r W: 4 fa:de f}: W L: 1/2 V ._ W ': — PP): '2. _P£k avJVfFi/i IL I; «’"Vi‘ ,s .r" iii 1 ‘— -.-' : as}: N ha W JIV’L, fay V ’3} WWME M “£2445? fag ALL; fly=fifif "i {Mrs-HQ? gi‘Hfif—fifi 4544‘; JM ‘ Fr mflwmfi fit: filer: PLVL'W’r Va! few? :26”. a' a) 15 Z I C was; but: Hffidv M f; if fax} . VI fl 7% ta?" Q .142 ‘ffit Mathews Wf fie W 7% f” {a twaumitflg so? > w fa“ ‘4; w w J” #W wars, V‘ée?’ NAME and Section No. 4. [25 points) One mole of water is adiabatiwa compressed from a pressure, [1,, of 1 mm to 112} atm. Calculate q, flU. and M for this process. Since liquids are quite incompressible it is safe to assume that V doesn’t change. The molar volume of Water is 18 ems. AU= gm Mathematical expressions: [fax = I‘M” f{n +1); n = n,1,2,... Jith=lnx jar—"d: = "Jr—{"4} fin —-]]; n = 2,3,... 1313th and Section Nu. ...
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PChemexam061 - NAME and Seetien Ne Che-misty 391 Pal 29:36...

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