MT2_2007_KEY

MT2_2007_KEY - Chemistry 1A Spring 2007 Midterm Exam 2...

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Chemistry 1A, Spring 2007 Midterm Exam 2 March 5, 2007 (90 min, closed book) Name:___________KEY____________ SID:____________________________ TA Name:_______________________ 1.) Write your name on every page of this exam. 2.) This exam has 40 multiple choice 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 may require bubbling in more than one choice to receive credit. Page 1
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Name_________________________ 800 600 400 200 IR Red Green Blue UV Wavelength (nm) Color and Wavelength of Light Δ G ° = Δ H ° - T Δ S ° Δ H ° = Σ Δ H ° f (products) - Σ Δ H ° f (reactants) Δ S ° = Σ S ° (products) - Σ S ° (reactants) Δ G ° = Σ Δ G ° f (products) - Σ Δ G ° f (reactants) S = k B lnW Δ G ° = - RTln K R S T R H K ° Δ + ° Δ = 1 ln Δ G ° = - nF Δ Є º pX = - log X ] [ ] [ log HA A pK pH a + = 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 x p ~ h p = mv Particle in a box (1-D Quantum): E n = h 2 n 2 /8mL 2 ; n = 1, 2, 3. .. PV = nRT RT E kin 2 3 = M 3RT v rms = Δ E = q + w w = - P ext Δ V T nR E Δ = Δ 2 3 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 Page 2
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Name_________________________ S ECTION 1: Q UANTUM M ECHANICS AND A TOMIC T HEORY 1.) Which of the following lists the sizes of the 1s orbitals for each species from smallest to largest? A) H<He + <Li 2+ <C 5+ <Fe 25+ B) Fe 25+ <C 5+ <Li 2+ <He + <H C) Fe 25+ <He + <Li 2+ < C 5+ <H D) H<He + < C 5+ <Fe 25+ <Li 2+ E) Need more information. 2.) Which of the following will become more paramagnetic upon ionization to form a +1 ion? Mark all that apply.
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MT2_2007_KEY - Chemistry 1A Spring 2007 Midterm Exam 2...

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