answers PRACTICE EXAM I

answers PRACTICE EXAM I - PRACTICE EXAM I 1. Dipole-dipole...

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PRACTICE EXAM I 1. Dipole-dipole forces are present in: A. CH 4 , CO, and CS 2 B. CH 4 and CS 2 C. CH 4 and CO D. CO and CS 2 Bad question; only CO will have dipole-dipole forces. CS2 is linear, with no electronegativity difference between C and S, and CH4 is tetrahedral 2. Hydrogen bonding is not present in: A. ethyl amine, C 2 H 5 NH 2 (l) B. diethyl amine, (C 2 H 5 ) 2 NH(l) C. triethyl amine, (C 2 H 5 ) 3 N(l) D. tetraethyl ammonium hydroxide, [(C 2 H 5 ) 4 N][OH](aq) 3. The halogen that most readily undergoes polarization is: A. F 2 B. Cl 2 C. Br 2 D. I 2 4. The weakest London dispersion forces are present in: A. F 2 B. H 2 C. N 2 D. He 5. Which of the following liquids is the most viscous: A. Heptane, CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 B. Dipropyl ether, CH 3 CH 2 CH 2 -O-CH 2 CH 2 CH 3 C. Hexanol, CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH
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D. Hexylbromide, CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 Br 6. Which of the following statement is true: A. the vapor pressure above a liquid is always equal to the external pressure B. vaporization always occurs faster than condensation C. the kinetic energies of the all the molecules in a liquid are equal D. as the external pressure is increased, the boiling point of a liquid will increase 7. Which of the following enthalpies are equal in number (but not in sign): A. H vap and H cond B. H fus and H vap C. H vap and H subl D. H fus and H subl 8. Which of the following has the highest value of H vap : A. N 2 (l) B. NH 3 (l) C. HCl(l) D. SO 2 (l) 9. After spilling vegetable oil on your clothes, you need to remove the stain. Which would be the best choice of solvent to remove the oil? A.
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This note was uploaded on 03/26/2011 for the course CHEM 1032 taught by Professor Guenard during the Spring '06 term at Temple.

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answers PRACTICE EXAM I - PRACTICE EXAM I 1. Dipole-dipole...

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