Summer 2001Test 1

Summer 2001Test 1 - 227 Summer 1 T851 I, Dr. WCHS, Name :...

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Unformatted text preview: 227 Summer 1 T851 I, Dr. WCHS, Name : k1"! 1. fit was lhe first to deiermine mat organic compounds contain C, H and D. Laweisier B. Welfler C. Avegadm fl. Kekule E. Liebig 1D A. Laveisiier B. Wehler C. flueng @Ifiekule E. Liehig fuunded emulate] them}? uf erganie chemistry" 3. Consider the diagram belew. 1|np‘lfhieh atomic erbiLaia (if earban must he hybridized to farm molecular nrbitala that wiIE explain the sigma bending in our gear] friend ethene '3' i“ x 2 1—K atomic whitala efearhea '\ A. la. 2a, 2131, 21:13., 2px 3. ZS, 2p“, 2p]... 2}}: C. 23, 2113.. 2]): 23_ 2px, 2px 2px, 21)}. L __ 4. Bend angles about Sp?" hybridized carbon atmna are L? _ U a. H1“ I1. 35.“ C. 911" r: 1:195“ E. Ififl‘" 5. Kekule would meet likely,r have said which if the fellnwing ax a dinner party '3 A. “I Like brewaies. but I‘m allergic m pecans.” in. “B eeauae i1 is fen: hauls," K5": C. “The tap: MU‘R have mugth flue 331113 energyr as we remainng 1:- erbitai. so were is no pairing.” D. “I mean mat. the ammie erbitala meet be hybridiaed first; then the banding may begin!" E. “Then I BJJJlilltfl ‘Duh. ei'eiybndy knewa ethrGflumearhmq fieplele the uzune layer‘." 6. All cf thc mcicculcs bclcw arc idcctica] cxccpl CHgill-IECH-iCH2CH3}(CH{CH2CH3}{C(CH3}3D CH3CH2(3H{C(CH3}3}[CH{CH2CH3JZJ D. E. 7'. Ccmpcunds A and B an: ' f N A. ccnslfluficrnal iscmcrs NH! 1 0 N5- /- XE. idcnfical compounds N . f;— _ 4115 nm immers- ” D. bad In Lhc bnnc E. imcrcsfing. but not had In the. bcnc A x2“? 8. Mkcncs {.31.} arc llnSi-mii'fitfll .. clnmccjnxr 5-p- hybfidizcd crhitcls “Bf C. arc :Llwpysanicnic " D. arc always. cationic E. 15:35: acid than clkancs- 9. Placc thc mclcculcc at Lhc right in H crdcr of increasing acidity. I wcakcst acid _. . . . Rmngcfilacid HI. Cyclopcntanc bands away f'mm planar A. to become acbiral B. to bccomc chiral C. to dcctcasc angle strain Q?!) to dccrcasc torsional strain D' E. to bccotnc morn spbcrical ll. Alcohols havc a bigth boiiing point that alkancs of a similar molecular mass bccausc A. thc alkancs must contain morc hydro-goon than that aJcobol to havc a simiiar molccular mass B. carbon atoms havc two flnpajrcd cicctmns in its clccu'onic gmand state a ox}?ch bass grcatcr- atomic mass than carbon \ j (E) hydm?bondjng man's jnflcchols . alkaac arc wicaiiy smailct 12. Torsional stain is a rcsult of A. dcw'ation from 13B“ bond anglcs about sp carbons B. deviation from 1212)“ bond anglas about cpl carbons --a Q: dcviation from 11H“ bond anglcs about spg carbons \ J ([1,? stcric cmn'ding in cclipscdmnflnmcls t“ E. static crowding in staggered conformers . t: _ . I _ 13. This compound banal}; primaryr carbons, scconcaryr carbons and; ternary carbona, _. I "J j- a. a, 3, I 3. 13,2 C. 3, 2,2 “if n 12, 1 \f/ [31,; 3., 5, 1 14. The VSEPR stmctare of BFI1(fl11orooiittdoboraac) is shown I Thc nct dipotc wonid bc . fi-.\E on 2» a c: M II C D E 15. Interest in vitalisrn begun to deerease when A. Rumerfttrd {lemmetrated that flueiei are dense cures Hf positive charge 13. it was eheemthaifighteeing mematneeeseaxyfnrflzenteafien flflife C. Sehredinger defieleped the mathematieal techniques te eeeete MUS h}; hybridizing A05 Ff? D. Avegadm finally counted the ME 1: III?"3 atems in 12m greme ef emhen b < .H"_.' Eight: ergenie eempemtd was made frem Emmet-genie Peaetant 16. Draw the Lewis snueture, VSEPR metiels fer eaeh meleeule bellow. Draw a dipeie en eaeh pole: bend. Draw the net dipole ef the nmleeule. It} Points 17. Supply all lune pairs male-2111:1115 and cun’pd arrows to amunt fpr {11¢ Dhsewpd rcactinn below. Don’t fflrgpt :0 pm champs-H andfflr —} when: appropriate. 11] Paints H :62 lb p H“): t m n 1 | “a w H-+C~ m —H + H— H —-— H—C— —— i: + HuG—wH I i-I' I Ian H H H 13. Draw the: chair m chair ling flip equilibrium Uf trans—1,73 dimethylcyclphpxanc and discuss the relative stability of each cpsfiprmafipn. Which mufpnnatipn will he HIGH: abundant? lfl Paints ...
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This note was uploaded on 06/19/2008 for the course CHEM 227 taught by Professor Wells during the Summer '07 term at Campbell.

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Summer 2001Test 1 - 227 Summer 1 T851 I, Dr. WCHS, Name :...

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