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Chem 4A - Spring 2006 - - Final

Chem 4A - Spring 2006 - - Final - Name GSI Chemistry 4B...

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Name__________________________ GSI_________________ 1 Chemistry 4B, Spring 2006 Final May 15, 2006 (180 min., closed book) Name: GSI: SID: Section: Please read this first: Write your name and that of your TA on all 20 pages of the exam Test-taking Strategy In order to maximize your score on the exam: Do the questions you know how to do first. Go back and spend more time on the questions you find more challenging. Budget your time carefully -- don't spend too much time on one problem. Show all work for which you want credit and don't forget to include units. Question Page Points Score Q1 9 24 Q2 10 27 Q3 11 28 Q4 12 44 Q5 13 41 Q6 14 15 Q7 15-16 52 Q8 17-18 25 Q9 19 28 Q10 20 16 Total 300
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Name__________________________ GSI_________________ 2 E=h ν λν = c E kin = ½mv 2 E kin = 3RT/2 v rms = (3 / ) RT M k B = 1.381 × 10 -23 J/K m e- = 9.11 × 10 -31 kg h = 6.626 × 10 -34 J s c = 3.0 × 10 8 m/s 1 nm = 10 -9 m 1 kJ = 1000 J 1 Torr = 1 mmHg 1 atm = 760 mmHg J = (kg m 2 )/s 2 PV = nRT ( ) nRT nb V V n a P = + 2 2 = 6 12 4 V(R) Energy, Potential R R σ σ ε T(K) = T(C) + 273.15 R = 0.0821 L·atm / (mol·K) R = 8.314 J / (mol K) A = ε lC P a = X a P tot P = F/A N A = 6.022 × 10 23 1 cal = 4.18 J 101.3 J = 1 L atm K a K b = K w K w = 10 -14 pX = -log X pK a + pK b = pK w pH = pKa + log - [ ] [ ] A HA k B = 1.381 × 10 -23 J/K m e- = 9.11 × 10 -31 kg h = 6.626 × 10 -34 J s c = 3.0 × 10 8 m/s 1 kJ = 1000 J J = (kg m 2 )/s 2 PV = nRT T(K) = T(C) + 273.15 R = 0.0821 L·atm / (mol·K) R = 8.314 J / (mol K) P a = X a P tot P = F/A E = q + w H ° = Σ n H ° f (products) - Σ n H ° f (reactants) H ° = Σ n H ° bonds broken - Σ n H ° bonds formed G ° = Σ n G ° f (products) - Σ n G ° f (reactants) S ° = Σ nS ° (products) - Σ nS ° (reactants) for a reversible phase change T H T q S rev = = G ° = H ° - T S ° G = G ° + RT ln Q G ° = -RT ln K q = mC T 101.3 J = 1 L atm anode cathode cell E E E o o o = G o = − nFE cell o Q nF RT E E ln = o K E RT nF ln = o F = 96,485C/mol e- N A = 6.022 × 10 23 1 cal = 4.18 J 1 amp = 1 C/sec 1 Watt = 1 J/sec
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