Quiz1_2006_answers

Quiz1_2006_answers - QUIZ 1, Chemistry 102, version 09--01...

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Unformatted text preview: QUIZ 1, Chemistry 102, version 09--01 5 problems, 20 pts total, 4 pts/problem For each question, select the best answer. Please remember to put answers ON the bubble sheet. 1) Which ofthese is the WORST Lewis stmelure'? a) b) C) .é] . I. o. .' ' ' 2— | . $3"“’.‘§’_3:-' ‘0 3 i :CI—c—CI: f . l -- I. I 0. U6 0k { hm? IIQ—S—O : :0” X6”— li lra'w 3 I .. :O: Elf) 6) I 1— INZNEO: . . ' 7‘ :.N=c=s_: tUe: — TM mm 2) Given the bond energies below, calculate AH for the. reaction Cgl-I4 + H2 ->- CZHO [4‘ i4 ll Cn—C 347 kJ/mol H , I I 020 614 \/C-:L’\ + H44 5} l¥~(l_.*C—EL CEO 839 ' l ‘4 ll 0—H 413 H H Hfl—H 432 [mg (“q lL-C. «147 “H _ .)+699 kJ/mol M: I, “an a: c. 1th? @427 H+—H ML meals c) —559 #5 d) -613 +1451? 6) +286 Lcflfi 4'.—- 1'ng : 3) Which of following sets of elements are listed in order ofincreasing electronegativity? a) F, Cl, Br, I b) B, Si, N, S @)CS, Cl, F d) H, Li, 0 e) none are correct 4) Which ofthese has the biggest dipole moment“? a '.. b — 3 {cl—Two: H———T—-—H ow be :CI: H d) c) :F———-F': :_I_—~——Br: ll .. i. “(acme 4‘ (4!! P101th - filial! Tad Into!“ 5) As indicated by Lewis structures, which ofthe followingr would probably not exist as a stable molecule? u a) CH3OH ml L915-” b) CHgO l ' C) NH4 if d) CH30CH3 ‘ e) C3H4 bl '3‘- c“. KL, H H c. * , {A I J (GUM at? .6 Una? flHLif— LS l H l». a\ 51 h w _. L/ —U ‘0' H’ | i Pr H H H” Q\ \C. 19:.Q: QUIZ 1, Chemistry 102, version 09--02 5 problems, 20 pts total, 4 pts/problem For each question, select the best answer. Please remember to put answers ON the bubble sheet. 1) Which of following sets ofelements are listed in Ol'dCl' Ot‘increasing electronegativity? a)H,lJ,O b)B,sLiv,s chx,cu,r d)F,C1,Bnl 6) none are correct 2) Given the bond energies below, calculate AH for the reaction CgHfi —> Cqu + H2 H ll‘ C—C 347 kJ/mol .J : C=C il—‘L’Q’l'i h) (3555c: 839 I a l c-——-H 413 r '+ H————H 432 iC't 34) §?+127klhnol ba‘H- leis )-559 1 l5 e)-6l3 "8 d)+286 c)+699 133,134— i‘i‘ \. / D29 / \ \‘l’ t l+~F| {L31 ‘Grq “Lefl 1675'). llHi My» 3) Which ofthese has the biggest dipole moment? a) I... b U L L qV< .CI . ) - . . l e) H z t i I Br: I :CI———C——CI: l‘ H—C—H ' ' I " Jew “(ad small | :CI: H d) e) 'F': HM—F‘ II .. A .. \ l t l * ' (I 456/? WM (“'7‘ r J0 QW-‘x TN": 1 cllthflc ‘3 M” t M ls {age 4) As indicated by Lewis structures, which ot‘the following would probably not exist as a stable molecule? LL H all ll ‘3‘ a) C1H4 50' H~o~o —H u- tw—o-e-ll { “ l 19)) SESOH [l 1+ ll C l 4 d d) CHgOCl-lg a 1fill H A q 2”“ ,3’ \c, 3. L —c, Q\ e) CH20 , \ L\ H H” 1H HE J «A IL» NLH’) "(mmwui 6‘. (Mk1 #1491” _ . . , l (‘i 51:" Elk» :3)Wh1eh oflhese 15 the WORST LeWIS Structure? a) 1— b) c) I " “l // ./I / if” z :9: d) // 1/4) /1_ <3: 1. :13" QUIZ 1, Chemistry 102, version 10--01 5 problems, 20 pts total, 4 pts/problem For each question, select the best answer. Please remember to put answers ON the bubble sheet. 1) Which of following sets ofelemenls are listed in order ofincreasing electronegativity? a) B. Si, N, s b) F, Cl. Br,1 @9CS‘CI, F 'd) H, Li, 0 e) none are correct 2) Given the bond energies below, calculate AH for the reaclion C31-14 —>- C2113 + H1 C———C 347 kJ/mol CZC 614 CEC 839 C—H 413 H-—-~—H 432 3) +127 kJr’mol b) —559 91-613 e) +601 _ r _ L _ _ L. . J _ 5131'. ' ._ . _ — _ rm I. 1 ‘7 u.’ p . a?" ‘ “; 3) As indicated by Lewis structures, which ofthe following would probably not exist as '.t'bl l" l‘.’ S‘leulc‘ ‘ H dsa cmoeeue CA (“4% a \L:L:(jli @ F: J‘ll‘LS-(i'llk 9'— h H /' \ C3H4 “- ‘— NI; H 90"“ ‘laf H U c) CHg.OH I M“ ‘J a I at H d) CH30CH3 '+ l“ “w” ““fwl “L” L“ 'l e) CH20 “W “V”? If t: Pfenle H IL . t . _ elkbgflhgst 4) Which 01 these has the biggest dipole moment? I r ‘ H I‘l a) . o o - b ' i ) ' ' o o C) H 1 IWBr: I :Cl—CII—CII H-——C|T—H :CI: H d "" _ l u H (3)) u. GIL]; em: all SqmmTrWro no :IF; 'FQ: H Ii. mam 1 ani B,n 04: pair firm/“ll lift 50 Jose . I I D" Elulmney»: ‘lcift‘l'sq ills ‘l ‘f‘l-e clipdlL {J .8le 5) Which ofthese is the WORST Lewrs structure? ll—F K V'”’[ P'le'l 30 lqu llfl'jl‘lfll‘l éGNl: rag-.191: 3) b) c) 2- l- 1- 7 {HQ-z Semis—{3'- 1 £ LA n .. -u_] ‘ O - '0 ~— (, :0! 44. .1 . d) e) /\ 1+ .. .- . .. l_ l I'l. OI. T: :.F. (U a “ Gd Wian QUIZ 1, Chemistry 102, version 10--02 5 problems, 20 pts total, 4 pts/problem For each question, select the best answer. Please remember to put answers ON the bubble sheet. 1) Which ofthcsc has the biggest dipole moment? ‘0 :Eg]: 1’) H : H—(It—I-I :éi: Ii-I d) . . e) .. _ :_F_ .F. : :olyw-Efr. : (—3? b) c) INENEO: z'F' 'Xe'_.F-: :Clz :Eflu—Clr—w—él': :CI: (1) e) 2- 1— ‘Clfi | IZNf-ZCZSZI | o—s—o . 3) (iiven the bond energies below, calculate AH for the reaction C2H3 + [-12 ->- CZH4 C—C 347 kJ/mol C=C 614 CEC 839 C—H 413 H—H 432 a) —()01 kJ/mol b) -127 c) 559 CU -169 c) +601 4) As indicated by Lewis structures, which of the following would probably not exist as a stable molecule? a) CHgOH b) CH30 c) CH3OCH3 (I) can (9 NH; 5) Which of following scts ofclcmcnts are listed in order ol’incrcasing clectroncgalivity? a) F. CL Br,l CS, Cl, F c H, LLO b) B, Si, N, S e) none are correct ...
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This note was uploaded on 02/20/2012 for the course CHEM 102 taught by Professor Spears during the Fall '08 term at Northwestern.

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Quiz1_2006_answers - QUIZ 1, Chemistry 102, version 09--01...

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