chem1A-fa03-mt1-Head_Gordon-soln

chem1A-fa03-mt1-Head_Gordon-soln - Chemistry 1A, Fall 2003...

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Page 1 Chemistry 1A, Fall 2003 Midterm 1 Sept 16, 2003 (90 min, closed book) Name:___________________ SID:_____________________ TA Name:________________ x This exam has 38 multiple choice questions. x Fill in the Scantron form AND circle your answer on the exam. x Each question is worth 4 points. Note: x The questions on this exam do not depend on each other. They may be answered in any order. x All the questions are equally weighted. Answer those you can quickly and go back to those that require more thought. x Some questions may seem obvious or too simple. They are. There are no ±trick² questions. x Questions that contain ±mark all that apply² may require you to mark more than one answer to get credit for that question.
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Page 2 x Potentially useful relations: 800 600 400 200 IR Visible UV Wavelength (nm) Color and Wavelength of Light compound ǻ G° (kJ / mol) CO 2 -394.36 H 2 O (g) -228.57 C 6 H 12 O 6 -910 O 2 0 ǻ G° of Formation N 0 = 6.02214 x 10 23 mol -1 R f = 2.179874 x 10 -18 J R f = 3.28984 x 10 15 Hz k = 1.38066 x 10 -23 J K -1 h = 6.62608 x 10 -34 J s m e = 9.101939 x 10 -31 kg c = 2.99792 x 10 8 m s -1 Gas Constant: R = 8.31451 J K -1 mol -1 R = 8.20578 x 10 -2 L atm K -1 mol -1 T (K) = T (C) + 273.15 F = 96,485 C / mol 1 V = 1 J / C 1 nm = 10 -9 m 1 kJ = 1000 J ' G q = ' H q - T ' S q ' H q = 6 ' H q f (products) - 6 ' H q f (reactants) ' S q = 6 S q (products) - 6 S q (reactants) ' G q = 6 ' G q f (products) - 6 ' G q f (reactants) S = k B lnW for aA + bB cC + dD b a d c B A D C Q ] [ ] [ ] [ ] [ At equilibrium, Q = K ' G q = - RTln K R S T R H K q ' ± q ' ² 1 ln ' G q = - nF ' ȯ º pX = - log X ] [ ] [ log HA A pK pH a ² ± E = h Q OQ = c O deBroglie = h / p = h / mv p = mv E kin = ½ mv 2 E kin (e-) = h Q - ) = h Q - h Q 0 f ² R n Z E n 2 2 PV = nRT RT E kin 2 3 M 3RT v rms ' E = q + w w = - P ext ' V T nR E ' ' 2 3
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P a g e 3 S ECTION 1: S TOICHIOMETRY 1.) What is the coefficient of oxygen in the balanced combustion reaction of one (1) mole of acetone (C 3 H 6 O)? C 3 H 6 O + O 2 ψ CO 2 + H 2 O A) 1 B) 2 C) 3 D) 4 E) 5 For the next four questions consider a gaseous hydrocarbon X which contains only carbon and hydrogen. It has a relative molar mass 2.25 times greater than molecular oxygen. The balanced combustion reaction of one mole of hydrocarbon X is: 1 X + 8 O 2 ψ 5 CO 2 + 6 H 2 O 2.)
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This note was uploaded on 05/04/2011 for the course CHEM 1A taught by Professor Nitsche during the Fall '08 term at University of California, Berkeley.

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chem1A-fa03-mt1-Head_Gordon-soln - Chemistry 1A, Fall 2003...

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