W06 MT1

# W06 MT1 - CHEMISTRY 110A 1N STR: R.N. SCHWARTZ MIDTERM...

This preview shows pages 1–6. Sign up to view the full content.

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

View Full Document

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

View Full Document

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CHEMISTRY 110A 1N STR: R.N. SCHWARTZ MIDTERM EXAlVI #1 Fri day, February 3, 2006 NAME: SID # (la Instructions.- 1. This exam consists of 3 questions. Before starting, write your name on every page. 2. Indicate answers, including units, and show your method of calculation and reasoning. I I I I 3. No credit will be given for an answer alone or for an illegible answer. 4. Use the conventions for significant figures and units. 5‘ If you run out of space working a problem, use the back of that page and indicate on the front that you have done so 6. You may use a calculator. No books or notes. 7. Useful constants and equations are on last page; you can carefully detach this page. MAKE SURE YOUR EXAM HAS 7 NUMBERED PAGES. V CHEM 110A MIDTERM #1 3 February 2006 NAME- 1. (40p0ints) One mole o .v v c 41"” 3. Calculate the work w for each step. v,_ P 3 3+0? A: W: —y\¥~.T\Y\-\7" : - HRT‘Y) \$3: :_@)(8,314X300)M—i W =’4.0 KT 3+W152TL:300K)59+ mm is T97. —. _7—-~h__” a 8 8,314 , l /Cv \$00K é 3331‘] R T10 12H? 1‘9: 48“! K w = @wo\)L%R)(13q .5500) = ~43} \<:r 6W 0»: w: —\oAV, bch u)er u (y? men M49 B, _ (Amwaozsswxq \4) V‘ ‘- 0403 bar w: {ow aha-mm): +40%L 19am 2 = Hour—Hy CHENI 110A MIDTERM #1 3 February 2006 NAME: amply. w=o Wk Ave—O Wm= —4 «4.38M.qu = —- 4.33 HI b. What is the value of AU and AH for the overall sequence of steps? Be sure to justify answer. ll“: is 5; 045411060 DU=0H=O c. What is the value of q for the overall sequence? since DUPO) \U = ‘5), CHEM 110A MIDTERM #1 3 February 2006 NAME: 2. (30 points) 3. Given that dz; = C V dT + + P]dV , prove that multiplying dé by J/T leads to an 7' 8V exact differential expansion. An ideal gas equation of state may be used for the proof. 9“ 3% ., erat + 4‘: Wlﬁl’lév 2.9: ’0 9V TT gw;%ﬁ§ ‘0 \/ liegl‘aTlT " 3T v V CHEM 110A MIDTERM #1 . 3 February 2006 NAME: b. Derive an expression for the change in the internal energy, AU , of a van der Waals gas undergoing a reversible isothermal expansion from an initial volume V1 to a final volume V2. AU: CHEM 110A MIDTERM #1 3 February 2006 NANIE: 3. (30 points) One mole of steam at 1000C and 1 bar is transformed to ice at 00C and 1 bar. Calculate AH for this process. For H20 : C0 = 33.58 JK‘lmol'l, ngmyliq = 75.3 JK”m0['1 , P,In.g C? m = 37 .65 JK‘lmol“, AH}; = 6.008 kJ mol_1 and AHfap = 40.65 1d marl. p= (bar T7373 Yr; 4m0\ YMQDQ, ‘— 3M 50M: AH4+AHL+ 503 0 3 9H1: AHWMSAHM: “(A W°‘>C"*0.l05¥40 > AHL = (4m) (was) (223 ~ 313) -— — 1550 5‘5 " [mammary = {Amonwozﬁ : — (000% 3- Aﬁv’r ‘3 - 54.3 KT END OF THE END 6 ...
View Full Document

## This note was uploaded on 04/03/2008 for the course CHEM 110A taught by Professor Schwartz during the Winter '06 term at UCLA.

### Page1 / 6

W06 MT1 - CHEMISTRY 110A 1N STR: R.N. SCHWARTZ MIDTERM...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online