Example Test 1 - For multiple choice select the one best...

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Unformatted text preview: For multiple choice, select the one, best answer. For short answer questions, than the space provided to answer the question. 1a. (10 pts) What, specifically, does “condensed states of matter” refer to? loft: flw‘l’ Ck?) (5/ '7 ‘ {14' use 110 more «Q ‘ mom; we r6 {511: fl" m A Jr. “ a ‘ ; ' I“? é/k/“ia- Af- _“ ‘ 5*"? TE l'! "mast i WY" .- 2. ( 12pts) What is the general, ph makes them happen?) "1" at“: ".3 {pl Ci if 0va (gm sue 5" Erik'fl J u ‘ . ‘ .fi :‘ e : -" \h a?!“ A“. éfiiw)...‘ ‘; 1 {iv {- ‘ ff??? “z 1m. wot-{52 iM“£‘*‘3 u/Q‘K‘Wr” ‘35 5H? v \ma'fimfig 1; rm” 3 slfyfigfgfla v viii .»"€ ‘5 3 [kiwi L“! C E I, Uri J 45 ' " ,e ‘1 k5! ( fjxr ,, r “firfi <3” 5 1’ “if—f um i ‘\ * é \ ‘U *"v 1"“: 1k ‘ i=1 a l. ' " ' "i “j; 1 :"‘-."»:;i7,;.utfl (Ov— H 4. (8 pts) Choose and answer below based on the following information: CF4, Molecular Weight 87.99, Normal Boiling Point -1 82”C CCIA, Molecular Weight 153 .8, Normal Boiling Point 423°C The reason that CF4 has a lower boiling point than CC14 is that (multiple choice): A. CF4 molecule have a greater polarizability B. CC14 molecules are more polar C. CF4 molecules are more polar ® CCl4 molecules have a greater polarizability 1 100 c; Hoilingpoinl (“til — mo SLH I Group 6A I ; s 0 30 100 150 Molar mass (gimul) 5. Examine the figure: The trend in the line containing compounds CH4, Sin, etc. has a fairly constant slope, while the line containing H20, H28, etc. shows a big drop after the first point. a. (8 pts)What information about the compounds is reflected in their boiling point? . l " _ . r i , .,i _, _ , . ( V _ . 7 re as: r : u . . .- ~ I ". - r , r, ’1,“ J: :c _ , *4 _ = A. n _. i 1 ~' ,- _- oé £557 ._, . r. . ., ate/J / _L\ i ' . t . i r ,l A ‘ , i1, . ‘ ' A _,m_., ‘. ,' wl‘gn \d 7/ ii “r9 V ‘- "y hi 53“" “F ' ‘ “‘3 '.’:-~“" l; . \l {5: (A! . . . . m fi‘hi“‘3% L' L~"'+C"© b. (Spts) Why are the trends 1n the two lines so different? \V-c‘wmc‘i‘” 1V1. mf‘fii‘é {a rim ‘= i" i' i e:- i t s f *5: 3' i? , . , , , ' ; K " - ., \31‘? a” m J 5 \(il 0 liq-7‘" ','» $113631}: 3“ 22-“ g ,5 {3}“- A' - . 1 7“ i V r; S kwwwfis :3 i519 XII-2 C‘s ' '1‘” {it ,‘ ' ,,_. a - 5, '2 , _ -' V - Cb.) ‘XX’A lib-£5 {K "E. *‘x A l . Ki! .‘ if. ; ("it a .1, Egg ¥ 6 NE 5"“ A ,9“ 1:27,: - ,.' V . i r ' . f a #5 e - - , ".7; - '2. Hf; . r 3 and 1nd1cate whether or not the substance IS polar . 'C , ’ l . ‘5 i g -5 , J§L\«W?/fgla grlwf‘aifumig L; (\ Hal,» 11 {12: u -I I]! "-C l. “E b. (10 pts) Give all types of intermoleculafforces that would be present in a sample ol‘PCls: 0“ l‘ D l???- ‘i ‘3: 5r» 1 15-3": is "t E J/ (note: it may be that you answer the same to parts c and d below) 0. (5 pts) What is the strongest intermolecular force in a sample of PC15? 7 DE see u- as" t / .2 (1- (5pm) What is the weakest intermolecular force in a sample of PC15? 7. (6 pts) a. Draw the Lewis structure or ammonia (NIH), and indicate Whether or not the substance is olar. t» P H a .. it I _ m f; VOV‘V-r {1‘0 1 ‘ T 1 V b. (l 0 ptstive all types of inter-mil ecular forces that would be present in a sample of ammonia: ‘35?“ 3mm {av-=3? 3', I as. at it's-5:5 . e}. 41132? 11111371! 3* y ‘ 1 I r; I. I V L 7 | (“t "" n i ill-fan“ "- ‘ "1.73- A “Ddfghffl ""9 {TH} J (note: it may he that you answer the same to parts c and d below) ( c. (5 pts) What is the strongest intermolecular force in a sample of ammonia? l‘» ‘5" lbw-:2?" ‘- {fit-1 r '3 1' I? L," -‘ 25.1 5 J d. (5 pts) What is the weakest intermolecular force in a sample of ammonia? “' ' "can a; V ST a -— lease _, 1+ . fl, 8. (10 pts) Circle the atom, molecule or compound that exhibits dispersion forces as its strongest intermolecular force: 6?) HCl C0 KF H20 J 9. (12 pts) Sketch,and label at an atomic/molecular level, an induced dipole and a way it can be created. Make sure you include any charges and/or partial charges: ; :_ v ' f1». 0‘ J1 Cur-L 4: l j I I r . ~. ‘ -- -- = - can. . a g ‘ ‘ x” -- r' -‘ l o Cf-t‘ J” (a Jail-r; nM/r’ \..._/ 1’ "(fig-l ',' J'- . a” {"ejf _ ‘ z“ 322 ’— \ \ \L," \Ag -~ ‘ . - - l - ’7‘ .\£‘(‘ ‘*"./‘L\«.‘“ K I _ 7 «fink-2 .{ (mi 1‘”; -L. l _ K r A :7 a . _ __ in I L k‘i :. \ wigg mum’- J l}? r l'r‘ .' , 10 a- (9 ptS)Below each of the following compounds, indicaie which intermolecular forces would be present in a pure sample: SO: k HF I ‘ '_ Kr Anew -— fi: “9- l‘nétmf'?“ 6-”: ‘C‘L‘ b. (8 pts) Now place the compounds é‘l‘flf‘lgi a" 1 PH3 ‘ I; \éi‘ “i5? 8213?? t3”? m in order of increasing boiling point (lowest to highest): l A ‘ 2.2” "5*- " i; .3. #3,. a i_ L7 "1 _ , elem-ow" (zit’wylfiji'b‘iflf‘: »- - ». {in {it 7 :l ‘ ._ H? ' 5' (few ‘3 __c_._._. 5r 1;» a" w a) my! 1 l. (12 pts) Which of the following hydrocarbons would have the lowest boiling point? Explain your reasoning: CleM I/ 101112" l/ \‘Mfi—H i ‘. E1 _1 fi _ : r ‘ J. J a” in; is C 393(131 i, )H i Q { -c 1‘ i 3!. not. A “u Mwwfi it ‘4‘ (Li “(i t -(‘ g: , b u C ha} \ R \ m I Q . A l h ‘j p I 1 ,v {a}? _ r 3;:- it‘sl‘l-a‘i’r‘ l is? , ‘- 5 7‘7) u i if -. t lest (MU: gr ‘ ‘1”— M. .,.- .. . .,,)7 ‘,,_ , k ’ QM: lfl‘r?’ _‘ w (atéléé ,T {wear-xx“ marcfijg—t a ",ipiygr » iv K a». M- MT momma” _ I_ 1) ‘ ‘/_JA (_ H— {W (- ‘3‘! : _ 1““ -= .{i ,_ , r . , a J 12. (12 pts) Describe one type of structure found in living cells that is held together by intermolecular forces. Include th e specific type of intermolecular force involved. . n1 ., r _. 1 Lin 2. v . . x A A “T - be were “€- " 9ND. or r~ n12 t a " 2%? 'r \h‘i‘e if {n6 Jiivri’fii‘ Y i“ “I " t/ r”. F' _"’L. .5; ,I .v_ L ‘ i l 'x " -: ‘- “Th: ' ' ‘ ’ Tm w a x mm, he Fm} ‘1 5 f a ‘-*“’=r§“3‘i 5“ "it; Cf iii: 5 H4“ {'E- ' "~ fr» " -“ ' i 1' Lfi ._ “Jul, -n.- .c- {xi-.33; 59;: .“fi. silk rt ‘* ribe the ability ofa liquid to flow against gravity up a » J a/ 13. ( I 0 pts) Identify the term used to desc narrow tube (“a a; " n 13; _-, 5" -- - "t i‘ 14. (42pts) Match the following terms: Q Surface tension 3 only form(s) in the presence of a strongly electronegative element 93 viscosity if i"': it.” cohesion > adhesion '3 / adhesion > cohesion \/ “ _ ‘ flu capillary action Jaw." paper towels blot up liquid spills M if concave meniscus (lower in center) ki e": convex meniscus (higher in center) elf H—bonds xf.’ water heads up on a waxed car g? is high in big, oddly shaped molecules 15. (15 pts) Sketch an atomic/molecular View of what happens when the ionic compound NaCl - - — a £114 dissolves in water. Label. 2 types of intenp‘olecular forces in your le‘etch. 7 '0’. V H »r9 k ){V 2") a n 1 :1 ‘ (9K cf : EN} 63 ' 7 WWI—{a K; (Fists); '“” c} i or” U): é 4’“? L “‘1' ‘7 L” i f. "H" i w {-1 .r 'i‘ \ k KM ’Afifl ivy”?- - : J \J- ‘ in)“; i ' E “A 5" gig“ "1 vwci . Wfi‘i‘ffi'ii' _- ‘U/x r A 0 P’ l fr- : '1“ _r at \ - v c o a,» Cf “" 7 only LLU’ “3": 75754] "‘3 is.“ E“. -. i .n , We; r "‘ "'3. i E 'f v.72"? {l :1 _ '7 \ L I. ‘i fl (“Q-Cc L _ - «Humming i .g_ 4. a - 1d,” ...
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  • Spring '08
  • LEMASTER
  • Chemistry, pts, Intermolecular force, Van der Waals force, Wy, strongest intermolecular force

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