2008_05_30_14_28_20

2008_05_30_14_28_20 - CHEM ll— t-‘all Quarter 200 ll Dr...

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Unformatted text preview: CHEM ll— t-‘all Quarter 200? ll Dr. Dil’asquale / Exam 3 4/0 DO NOT OPEN THIS EXAM UNTIL YOU A RE TOLD TO DO SO!!! There are 20 questions worth 2.5 points each. You will have 50 minutes to complete the exam. Your answers will be submitted and recorded using your lnterWrite PRS RF clicker. Your electronically submitted answors are what will he scored. so please make sure you input your answers properly and in the units requested. Do not submit answers in scientific notation as they will not be correctly scored. You may submit an answer for any question as many limes as you Wish within the time period for the exam. but only your last response for a given question will be retained. A Periodic Table with useful constants and an equation sheet are attached. Feel free to write on this exam for your work. CLIC‘KER INSTR UCTIONS: 1. Join the RF class as you normally would by finding the class name or by typing the channel number noted on the chalkboard. 2. The top line ol‘ your clicker should display "TS'I‘T‘ which indicates you are in test mode {see below). . TST: ® 54’ o i:1rs.=rv--'i_te Enter Test # FR 3 © © (9 ®®®O When asked to “linter Test :13“. please enter your test i‘orm. This is form B. Press " and you will get a "Received" continuation. It‘“l£nter Test t!“ is not displayed or it' you entered the wront:I test form. press the < button while “TST:” is displayed to change your test form. 4. Use the A and Y buttons to navigate to the question number you want to answer. You may answer the questions in any order at your own pace. Answer with either a numerical answer or L3) A thru [3 for multiple choice questions. Press ‘" and you will get :1 "Received" confirmation. 5. When you have submitted all of your answers and are finished with your exam. turn your clicker otl‘ inside ofthe lecture hall and do not turn it back on until alter the exam has concluded or your submitted answers may be erased. TST: B I} When a solution of irontlll) nitrate is mixed with a solution of sodium hydroxide, a rust colored precipitate forms. This precipitate is probably A) sodium nitrate. B) ironflll) nitrate. C) sodium hydroxide. CL? iron(ltl] hydroxide. ') none of the above it ,1} ,I _11u .1 {7/1418 number of valence electrons in the acetic acid molecule (Cl-l3COgI-l) is \ , 2] s 3} The scientific principle which is the basis for balancing chemical equations is @he Law of Conservation of Mass. J t he Law of Conservation of Energy. C) the Law of Conservation of Mass and Energy. D) the Law of Definite Proportions. E) Avogadro's Law. *- \ Mmolecuie in which the central atom has no lone pairs and forms four single bonds is said to hth a shape. A) tetrahedral B) linear C) pyramidal @wnt E) planar 5} Which of the following equations is not balanced? Jr l C3H3 + 502 ~ 3C02 + 4:120 ac, SH 100 *5 3:6 (x0 5” ZNa + ZHZO -* 2NaOl-l + Hg :Mn Ill-H 20 ‘32Nn go 3:! 4H tM {DO 2A1+ (allCl—* 2AlCt3 + 31-12 JAl (yet so! *3 2m ch| an '2 02+Og—v803 [S‘HUD "-7) .g t; :50 E)?! Hg 4- 02 —» 21420 334.. Lita . 30 a; “it 39 /(i) In the reaction 2 C + 02 —> 2 CO, how man}r nmles of carbon are needed to produce (16.0 g 6) of carbon monoxide? “33 {.g) I hr» 0 o "’ i 13-] l} 4) .U'l Well reaction is an example of a precipitatinn reaction? . )3’6 HC] (at!) + 2 A] (5} —’ 2 AlC13 (aq) + 3 112 (g) )"FcClg (aq) + KO] l [aq] H FL‘(OI-l)3 [5} + 3 KCI (m1) ,szl—Igm + 02W —- 2113;0(5) D) HzC‘Oy, (aq) —v llgO (l) 4» C02 (3;) @112504 {aq} + Cn((')l l)g (aq) —- Q1504 [aq) + 2 I lZO (I) 8) Which element is most likely to form three covalent bonds? A) S B) Si C) Sc 2(\ q WSW" W t, £01304 Co‘nfifi‘éfl 9) Consider the reaction: 2C0(g) + 02(3) # 2C02(g) The equilibrium expression for this: ruactinn is 3lC02l [C01l021 [c021 B — X\ ) 1C01+ [0%] GI) [C9212 ICQEmz] Iconogl [C02] F) ICE-Plug] ' [(30le D) 10) The number of grams in F200 mules of N2 is lfl (v . JVl w '38 ll) The formula for Sulfur lwxabromidu is A) SiBEJ B) SBr4 l 9 5-8 r5 fl B-2 D) C l: C )‘ll [3} SiBr6 ’ II was);- 10) [-2) 5136 9) 11) u 12) in a Covalent Compound the bond length can be defined a:- '12) A) the distance between any two pairs of electrons. 09 the distance between two nuclei when repulsion and attraction are balanced. C} the distance between two nuclei when the attraction is greatest. D} the distance between the two largest atoms. IE) the distance between two nuclei when the repulsion is greatest. /~<\ 13} Consider the reaction shown and identify the staten‘lent that is not true. 13) :— . SZS‘C CaCO3 {s} —> CaO (s) + (:02 (g) A} The products are a solid and a gas. It \ B) The reactant must be heated for this reaction to occur. ) Water must be present for this reaction to occur. D) This reaction is balanced as written. Ii) There are no solutions used in this reaction. 2591/11“: formula weight of Al2(SO4)3 is grams. l4) 3w; 1 1i 2.2 m —+ in a.) Sr]: . 15} In the balanced reaction shown, the mole ratio of Fe253 to 03 is 15) Fe253 + 4 02 - 2 FeO + 3 502 if \ A] 5 to 5. B) 4 to 1. to 4. D) 4 to 3. ii) I to 2. to) A wrocess or reaction which takes in heat from the. surroundings is said to hi. [6} ©endothermic. Misothermal. blendergonic. \Et) conservative. Ii} exothermic. fl lnternuctear —u- distance Which mint identifier; the bond len 'ih between the two atoms of the diatomic moleculL l7 i5 whose potential energy is shown on the graph? /l?/Whieh point identifies the maximum repulsion between the two atoms of the diatomic IS} E molecule whose potential energy is shown in the graph? Svit'rt the L‘:u-n':'i_figur':' to nmtrl: the lim'riptimi. A. [9 A fast reaction with a large negative free energy change 19) 20) A SlUW reaction with a small positive free energy Change 20) Properties of Solutions Chemical Kinetics Equation Sheet \ Mun pmmr : "II"? M A? . mm nf mlmwn I Mm: ‘IIIIIHBI. n. I _ I ’ Chemical Foundations Thermoehemistry Muir frm'rmn H! A — x.‘ - T |I1[-\]. — l! '"l-lL _ 51' . . , . . {l-tl' . IT, - 32 Flv—zi', Agzq.“ =lf_3._“- “Mm”: mad-uruhm [HI m I_ fl, 9 _ .. - . hm.‘ n! mlurimr '. ' 93F nmrk - jun rx durum f = — ’l-I - I r I . ’Il'. . r . I T’ T" 7‘ 5°C + l" l 1" =1“; =1.. mam = ——-—-”" “"r "m" 1|:l -1: r. = I]. «. 273.15 ..- = —Mr _ l‘”"’"""' “’_"""‘” l-t - I I r = on DWI“, = Tm AH = M. + PM PM“ _ III IHIIIIIIIIIII m mm .1 = trfié?’ pm = pI . pII q = __ , ; Stole hlometry ~ rm! A H = "rm" - H""""' F ,r p n' i t NI 1 mm' m . - , . "frl "l (i “I I II f r Ma“ r; = .. W, M . A H = [,I m an In of one mole of \uhdanec I'm-.1- .lqu mu“: HI— _ luv-in of «Jun.- h'l'lhllt'riul P9 I I. M _ actual )ichl (1:1 I W, -'I! t “rum-:1: \wilrml'. .3 E; = a.’_ AT -— rA’Am. .... In!" H: « ————-~—IIICIIIIII_ICIII IIIIIII IIII x l n ,ur = LL Mm nun-mm - z", AHIIRr'm mun AT : iK,m Mammymgw -\U' = E",-‘f;:lPfl‘lifdénl—Zfl.;\6.lflrllt'hl’lfll I]: rum to Lll'l‘lc u u! uuonl ] -. . -. .\.s = .\ P i 1 r- ,5 (R‘ n ..'I , :‘f.--.......J'r'. -....... Elli-"NJ I III EN“ l M m l' Zn m M“ Nuclear Chemistry n... I. = II . _-\.\‘ | - Ran- : —— = i.“ States of Matter .-\.\'._,,II_W_ = ~57” .‘u ' -v ." .' " v . . . new”: rm" H _ _._\g In; = 4.: (.llemleal hquillllrtum and v ‘ .v — . . r - - . _ . t. . . i .K =L H“ i z A 3M“ = Mm + “mam” M = Am: ' ' l I _ r' T” ' \t‘ AH n5 “G'hmh‘l‘ H' = nil? II: “II I II p” . p0” _-1-s I J : " . ' ‘ ‘ Structure and Bondin - :: ru- mrlar mu.” =£¥£ rll' equilibrium afi‘ : ll [hm-fian- AH" = FAS' I: g l.“I Ha“ J M ’ 1': .l’ . t- w =—lnel H ] Prw=i2*P;*P.'--- ,‘\{F=,\fi"-RTIHQniprrrfl=mt _\H;m- ' fl: - l m.- - Raucmrm I I H. A. P I. = H \ [ — ] (l! t‘qm'ii'im'um AU‘ = -RT In K IE ; ill. Ill" '- ' MI I, WI I _ “I -»-.- l INA] n InK=—‘—-— — »'— 52m" I'mr‘jmi" Jar—- R -r- R . 51-" "m..- Ir a Ann‘ 1"] = IF'. ‘ . ( I . f: x d Electrflchemistr) E = I2 ‘I 'r lfl'nfnmrl ‘ "( Ilium min-n = W 3RT .. F. r ' lrnrlrrli] fl = "'_'_'— a u " - . "'° moiar m m ”' ‘ ' 3 I v = . __ .u ., l = 5: II .+ 5:“ fxmm' t'nrnay: i[Ll—gl AA" A" m Rate :1} rflminn {rt-r can I _ molar mm 2 ' 'i I " . r _r IIIIKI I NI: _ “I Rate a} rffml'rm {0! ma: 2 - mam: nun-t I E = -L‘{ («anion-J .ulrfmk' m‘amcnrly I : {1x r II_ I “I I I: (hum. If} J, I. I I _ . I” I_ ,IN “up _‘_,¢ = K ,1“. m] u . I., . mmnrim tumiu mmmm rqu x } Iv i' .i . [If _ P .. L _ p. an — x[L'—nb}=nflr l'harmrz-rfl' 1' from .-. I __ rIUIIa _ H], .I z r: I "" l.‘ ._. _.-nf:'uidrn! dip-air naturism r'f -' I . v ‘ A" =‘””' [3;.:;r'.-r].-§u' :L.-t ] n). = M'ninti N .w -_ Elliimmh iJmkm }— Enrmmr. {unrth - J E = £7 — —l“Q I; K ,_ : [1 ruin“ ll lunimrl‘ "'FII I le' ring : i'm-l'uru- r' I- :flmmiinc r' J -rnnnirrur:liu2 r' I IIUI Ii _ - 5 = E' - logo ur 951' u ['rrrrlmnln w" l’lilfflr .- umprx .«Imml‘s ...
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This note was uploaded on 07/15/2008 for the course CHEM 11 taught by Professor Dipasquale during the Fall '08 term at UCSD.

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2008_05_30_14_28_20 - CHEM ll— t-‘all Quarter 200 ll Dr...

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