Final_Sp08_KEY

Final_Sp08_KEY - Chemistry 1A, Spring 2008 Final Exam,...

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Chemistry 1A, Spring 2008 Final Exam, Version A May 17, 2008 (180 min, closed book) Name:_____ KEY _________ SID:____________________________ TA Name:_______________________ 1) Write your name on every page of this exam. 2) This exam has 25 multiple-choice questions and 5 short answer questions. Fill in the Scantron form AND circle your answer on the exam. 3) There is no penalty for guessing, so answer every question. 4) Some questions require selecting multiple answers for credit. These questions clearly state “Mark all that apply”. 5) Show all work to receive credit on short answer questions. Question Page Points Score Multiple Choice 3-7 200 26) Reactions and Thermo 8 26 27) Chemical Properties 9-10 35 28) Acid-Base Chemistry 11 24 29) Hydrogen Fuel Cell 12-13 35 30) Nuclear Chemistry 14-15 30 Total 350
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Page 2 of 14 800 600 400 200 IR Red Green Blue UV Wavelength (nm) Color and Wavelength of Light G ° = H ° - T S ° H ° = Σ H ° f (products) - Σ H ° f (reactants) S ° = Σ S ° (products) - Σ S ° (reactants) G ° = Σ G ° f (products) - Σ G ° f (reactants) S = k B lnW G ° = - RTln K R S T R H K ° + ° = 1 ln G ° = - nF Є º pX = - log X ] [ ] [ log HA A pK pH a + = Heat Capacity of H 2 O(l) = 4.184 Jg -1 K -1 Density of water = 1.00 g/mL N t = N 0 e - λ t t 1/2 = ln(2)/ λ For y = ax 2 +bx+c, x = b ± b 2 4 ac 2 a Standard Reduction Potentials E°(V) Cl 2 (l) + 2e- 2Cl-(aq) 1.36 Br 2 (l) + 2e- 2Br-(aq) 1.09 Ag + (aq) + e- Ag(s) 0.80 Cu 2+ (aq) + 2e- Cu(s) 0.34 2H + (aq) + e- H 2 (g) 0.00 Pb 2+ (aq) + 2e- Pb(s) -0.13 Sn 2+ (aq) + 2e- Sn(s) -0.14 Ni 2+ (aq) + 2e- Ni(s) -0.23 Co 2+ (aq) + 2e- Co(s) -0.28 Cd 2+ (aq) + 2e- Cd(s) -0.40 Zn 2+ (aq) + 2e- Zn (s) -0.76 Li + (aq) + e- Li(s) -3.04 E = mc 2 E = h ν λν = c λ deBroglie = h / p = h / mv E kin (e-) = h ν - Φ = h ν - h ν 0 = R n Z E n 2 2 E i f =− R 1 n f 2 1 n i 2 x p h/4 π p = mv PV = constant PV = nRT RT E kin 2 3 = M 3RT v rms = E = q + w w = - P ext V E = 3 2 nR T N 0 = 6.02214 x 10 23 mol -1 R = 2.179874 x 10 -18 J R = 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 1 J = kg m 2 s -2 1 atm = 760 mmHg = 101,325 Pa 1 atm L = 101.3 J
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Page 3 of 14 Multiple Choice Questions (8 points each) 1) In lab, the reaction of acetic acid and sodium bicarbonate produced CO 2 (g) to inflate your airbag. CH 3 COOH(aq) + NaHCO 3 (s) CH 3 COO - Na + (aq) + CO 2 (g) + H 2 O(l) If 53 g of CH 3 COOH(aq) is mixed with NaHCO 3 (s) to produce 7.2 g of water, what is the limiting reactant? A) CH 3 COOH B) NaHCO 3 C) CO 2 D) H 2 O E) CH 3 COO - Na + 2) Consider a two-slit experiment using monochromatic light. Which statements are true? (Mark all that apply.) A) Constructive interference results in bright spots. B) Constructive interference results in dimmed or no intensity. C) Changing the frequency of light affects the interference pattern. D) Destructive interference results in dimmed or no intensity.
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Final_Sp08_KEY - Chemistry 1A, Spring 2008 Final Exam,...

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