Name. Chemistry 51 DS Quiz 1 (about 15 minutes) 1. Name the following compounds SSN A: (CH 3 CH 2 ) 2 CHCH 2 CHCH CH 3 OH 3 C(CH 3 ) 3 B OHC CHO

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1 hemistry 51 DS Quiz 1 (about 15 minutes) 1. Name the following compounds Name SSN A: ( ) 2 H H H HH OH 3 ( ) 3 B OH HO (you should know this kind of notation but if you are uncertain ask) l 2. Which of the following will have the highest boiling point and which the lowest? Indicate next to each compound the kind of intermolecular forces prsesnt.: NH( ) ( ) 3 N ( ) 3 H

2 hemistry 51 DS Quiz1 9/8/99 1. For the following reaction what is the acid and what is the base? NH 3 + BF 3 H 3 NBF 3 2. What are the formal charges in the product in the question above? 3. Draw the unique isomers of 2 H 5 N. 4. ircle the molecules which are completely planar. H H 2 H 2 = Br 5.What are the names of the two compounds given above.

3 hemistry 51X Quiz No. 1 9/9/99 1. Draw three electron dot diagrams for the positive ion [HO-H-NH 2 ] + Show formal charges. 2. Name the following compond HO Remember that the terminal of each line segment is understood to be a carbon atom with the appropriate number of hydrogens unless otherwise specified. 3. Which of the following is the strongest acid? Which the strongest base? SH 2 OH 2 NH 3 NH 2 - anion strongest acid strongest base

4 hemistry 51 DT Quiz 1 1. Draw a stable electron dot structure for NO 2. Show all valence electrons and formal charges. 2. Make a careful three dimensional drawind, using wedges and dotted bonds, to show the structure of ==. 3. Name the following. H 2 H 3 H 2 l Select a compound from the following list for 4 and 5. HO 2 O 2 H H 3 OH O oxalic acid A cyclohexane 1-pentanol 3-pentanone B D 4. Which has the highest boiling point? 5. Which would be least soluble in water?

5 hemistry 51 DE Quiz No ircle and name each of the functional groups in the following molecule. H 3 O O 2 H 2. Name the molecule above 3. Which of the following is the strongest acid and which is the weakest? H 5 + NH 4 + H 3 O+ 4. Give an acceptable electron dot structure for H 2 NN showing formal charges. 5. There are several isomers having the formula 3 H 8 O. Give the structure of an isomer which would have a high solubility in water. Give an isomer having low water solubility.

6 hemistry 51 Mon/Wed Quiz 1 1. Draw four isomers of molecules having the formula 3 H 6 O. 2.Draw two different electron dot diagrams for molecule HNNN. Show formal charges. 3. Which of the following is the strongest base? Which is the strongest acid? H 4 NH 3 H 2 O HF 4.Name the following compound O OH 5. For the formula 4 H 10 O draw the structure which you would expect to have the lowest boiling point.

7 Quiz 1 hem 51 Fall 2000 name ssn 1. ircle the compounds below which are associated liquids. O O 2 H O 2 H 5 ( ) 3 OH 2. Write the IUPA name of each compound above under the structure. - 3.Draw two resonance structures for the NO anion. Show formal charges. 4. In each pair below circle the stronger base. I - vs F - NH 3 vs OH - vs OH - OH - vs SH -

8 hem 51 Quiz 1, Summer Draw isomers of molecules having the formula 3 H 6 O. 2. Which of the following would be the strongest base? H 4 NH 3 H 2 O HF 3.Which of the following will have the lowest boiling point? Which highest? O 2 H ( ) 4 O 4. Give an electron dot diagram for the anion ON-

9 Quiz 1 hemistry 51, Fall 2001 Sept. 4, Which of the following is the strongest base and which the weakest? - NH 2 - OH - F - strongest weakest 2. Draw a stable electron dot structure for the cation NH 2 + HO 3. Name the following compound F 3 = H HO 4. Draw the structure of the compound having the formula 5 H 12 O which would have the lowest boiling point.

10 hemistry 51 Tuesday AM Quiz 1 1. Draw at least four isomers of the compound 4 H 9 N. 2. Draw three different electron dot structures for the nitrate ion, NO 3 - ion Show formal charge. 3. onsider the following compounds NH 2 OH F Which is the strongest acid? Which is the strongest base? 4. In each pair circle the compound which will the higher boiling point? ( ) 2 NH vs ( ) 3 N vs ( ) 4 O 2 H vs HO 2 O 2 H

11 hemistry 51 Quiz 1 - Thursday 1. X has the formula 5 H 10 O 2. X reacts with metallic potassium to liberate hydrogen gas. X is not acidic. Write an acceptable structure for X. 2. Name the following compound: O HO 2 O 2 H 3 Here are some bond dissociation energies. H-H 104 kcal/mol; F-F 38 kcal/mol; H-F 136 kcal/mol. alculate the H for H 2 + F > 2HF

12 hemistry 51, Fall 2004 Quiz 1 1. For the molecule having the formula ===H H identify the hybridization of each carbon and make an accurate drawing showing the three dimensional structure of the molecule. 2. For the anion shown below draw three reasonable electron dot structures showing formal charges. Which is the most stable and why? [N-H-HO] - 3. Draw as many isomers as you can for molecules having the formula 3 H 5 F. Name the structures. 4. Rank the following for the size of molecular dipole moments, F 4 F F 3 H

13 hemistry 51, Fall 2004, Evening Quiz 1 1. For each equilibrium indicate whether the right side (products) or left side (reactants) is favored. Write the letter R or L. a - NH 3 + OH - NH H 2 O b - F + NH 3 F - + NH Name the following compound HO OH OH 3. Draw at least three electron dot structures for the following. Which is the most stable? O O H N H

14 hemistry 51, Quiz 1 Fall For each of the following equililibria should the equilibrium constant be greater or less than 1. NH NH 2 H H 2 O H 4 + H 3 O + 2. For compounds having the formula 6 H 10 draw a structure having no pi bonds *** one pi bond **** two pi bonds 3. a)for the halogenation of ethane with uv light to yield chlorethane and Hl what is the mechanism? Draw the transition state very carefully of each step. b) Some butane is formed during the course of the reaction above. Give a mechanism to explain the formation of the butane.