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Practice Exam 2C

Practice Exam 2C - Practice Exam – 2C 1 At −100 ºC all...

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Unformatted text preview: Practice Exam – 2C 1. At −100 ºC all of the following are liquids. In which of the liquids there is going to be significant hydrogen bonding? 1: CH 3 F 2: CH 3 NH 2 3: CH 3 OH 4: CH 3 Br A. 1 only B. 2 only C. 1 and 4 D. 2 and 3 E. All liquids will have significant hydrogen bonding Points Earned: 0/1 Correct Answer: D Your Response: E 2. Which of the following molecules is incorrectly paired with its molecular geometry? I. AsF 6 – octahedral II. H 2 O trigonal pyramidal III. XeF 2 trigonal planar A. I only B. II only C. III only D. I and III E. II and III Points Earned: 1/1 Correct Answer: E Your Response: E 3. Which element A will result in a trigonal pyramidal structure for the neutral molecule with formula AF 3 ? A. C B. O C. Xe D. B E. N Points Earned: 0/1 Correct Answer: E Your Response: A 4. What are the correct electron domain and molecular geometries, respectively, for XeF 4 ? A. octahedral, square planar B. square planar, octahedral C. trigonal bipyramidal, seesaw D. seesaw, trigonal bipyramidal E. tetrahedral, tetrahedral Points Earned: 1/1 Correct Answer: A Your Response: A 5. What is C-S-C bond angle in ethyl methyl thioether, show above? A. exactly 120º B. slightly more than 120º C. exactly 109.5º D. slightly less than 109.5º E. nearly 180º Points Earned: 0/1 Correct Answer: D Your Response: E 6. Which one of the following molecular geometries cannot result from the trigonal bipyramidal electron-domain geometry? A. Square pyramidal B. Trigonal bipyramidal C. Seesaw D. T-shaped E. Linear Points Earned: 1/1 Correct Answer: A Your Response: A 7. A certain organic compound was burned, producing 1.481 g of CO 2 and 0.303 g of H 2 O. The mass of the original sample was 0.438 g. What is the empirical formula of the compound? A. CHO B. CH 2 C. CH D. C 2 H 2 O E. C 2 H 3 Points Earned: 0/1 Correct Answer: C Your Response: D 8. Hydrocarbons with 6 carbons in their longest chain have a parent name "hex" for "six". Which hydrocarbon has the same empirical formula as cyclohexane?...
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Practice Exam 2C - Practice Exam – 2C 1 At −100 ºC all...

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