090213_Exam1_answer - Chem340 Physical Chemistry for...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chem340 Physical Chemistry for Biochemists Exam 1 Feb 11, 2009 Your Name _ I affirm that I have never given nor received aid on this examination. I understand that cheating in the exam will result in a grade F for the class. Signature . Sec 1 Multiple Choice [ /36] Sec 2 Calculation/MC [ /20] Sec 3 Long Question [ /48] Sec 4 Derivation [ /13] Total [ /100] Total points are 117 points. If you score more than 100, you will receive 100 points.
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Multiple Choice Questions (Some questions may be similar to those one in quiz, but not the same) Each 3 points [ /36] Q1. Calculate the average rotation energy of one mole of CO molecule assuming that it is an ideal gas. Choose the closet from the choices (a- h) below. (a) 0, (b) RT/2 (b) k B T/2 (d) k B T (e) 3RT/2 (f) 3k B T/2 (g) 3RT (h) 3k B T Q2. What is expected heat capacity at a constant volume C V per one molecule of CO at T = 200K (neglecting the vibrational energy)? Choose the closest. (a) 0 (b) 3RT/2 (c) 3k B T/2 (d) 3R/2 (e) 3k B /2 (f) 5RT/2 (g) 5k B T/2 (h) 5R/2 (g) 5k B /2 (h) 3RT (i) 3k B T (j) 3R (e) 3k B Q3. Choose the most appropriate term defined by “A system variable reaches a constant over time in any part of the systems” (a) Quasi-static state (b) Reversible process (c) Irreversible process (d) Equilibrium state Q4. A total differential of H, dH is given as a function of dP and dT as BdT AdP dH + = . Which of the following statement is correct on A and B? Select all that are generally correct. (b) B is zero for an ideal gas (c) A = ( H/ P) T (d) B = ( H/ T) P (e) B = C V (f) B = C p (g) B = P T P T V Q5. When dz = fdx + gdy, choose condition(s) required for dz to be an exact integral. Choose two or three correct answers. (a) x y y z x z = (b) x x y y y z y x z x = (c) x y y x x z y y z x = (d) y x g x f y = (e) x y g y f x = (f) x x y y y g y x f x =
Background image of page 2
3 0 2 4 6 8 10 10 20 30 40 50 60 70 80 90 100 110 120 130 V [L] p [bar] p 1 V i p i V 2 p i V i Q6. A total differential of U, dU is given as a function of dV and dT as YdT XdV dU + = Which of the following statement is correct? Select three that are generally correct. (b) For a real gas, dU ~ XdV (d) X = C V (f) X = C p (g) X = P T P T V Q7 . The graphs below (Left and right) show isotherm P-V plot for ideal and van der Walls gases (CO 2 ) at T = 300 and 450 K. Which line is for a van der Waals gas at 300 K?
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 12

090213_Exam1_answer - Chem340 Physical Chemistry for...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online