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~•The APOADVANCED - College PLACEMENT Board PROCRAM' ;-:,:\-/.~~:i·:·;: .'-"'". ..... ".'::,;~. --'".:',-..-: :.:'"',':.: ~'>.". "";::".-;!? =-:~
Threehoursareallotted forthis examination. Onehour and30minutes areallotted forSection 1,which consists of multiple-choice questions.ForSection II,Part A,40 minutes areallotted; forSection II,Part B,50 minutes areallotted. Section Iis printed inthis examination booklet.SectionIIisprinted inaseparate booklet Time -1hour and30minutes Number ofquestions -75 Percent oftotal grade -45 This examination contains75multiple-choice questionsand5survey questions. Therefore, please be careful tofill inonly theovals thatarepreceded bynumbers 1through 80on your answer sheet. No calculators maybeused onthis examination. GeneralInstructions INDICATE ALLYOUR ANSWERS TOQUESTIONS INSECTION ION THE SEPARATE ANSWERSHEET. No credit willbegiven foranything writteninthis examination booklet,butyou may usethebooklet fornotes or scratchwork. Afteryouhave decided whichofthe suggested answersisbest, COMPLETELY fillinthe corresponding oval onthe answer sheet.Giveonlyoneanswer toeach question. Ifyou change ananswer, besure thattheprevious mark iserased completely. (A) state (B) city (C) country (D) continent (E) village Many candidates wonderwhether ornot toguess theanswers toquestions aboutwhich theyarenot certain. Inthis section ofthe examination, asacorrection forhaphazard guessing,one-fourth ofthe number ofquestions youanswer incorrectly willbesubtracted fromthenumber ofquestions youanswer correctly. Itis improbable, therefore,thatmere guessing willimprove yourscore significantly; itmay even lower yourscore, anditdoes taketime. If,however, youare not sure ofthe correct answer buthave some knowledge ofthe question andareable toeliminate oneormore ofthe answer choices aswrong, yourchance ofgetting theright answer isimproved, anditmay betoyour advantage to answer suchaquestion. Use your timeeffectively, workingasrapidly asyou canwithout losingac ra . Donot spend toomuch timeon questions thataretoo diffi lt. Goontoother questions andcome backtothe diffi lt oneslater ifyou have time. Itis not expected thateveryone yrillbeable toanswer allthe multiple-choice questions.
PERIODICTABLEOFTHE ELEMENTS 1 2 H He 1.0079 4.0026 3 4 56 7 8910 Li Be BC N 0 FNe 6.941 9.012 10.811 12.011 14.007 16.0019.0020.179 11 12 1314 15 16 17 18 Na Mg AlSi P SCI Ar 22.99 24.30 26.9828.0930.974 32.0635.453 39.948 19 20 21 22 232425 2627 28 2930313233 3435 36 K Ca Sc Ti V Cr Mn FeCo NiCn Zn Ga Ge As SeBr Kr 39.10 40.08 44.96 47.90 50.9452.00 54.938 55.85 58.9358.6963.5565.3969.7272.59 74.9278.96 79.90 83.80 37 38 3940 41 4243 44 45 46 474849 5051 5253 54 Rb Sr YZr Nb Mo Tc Rn Rh Pd Ag Cd InSn Sb Te IXe 85.47 87.6288.9191.22 92.9195.94 (98) lOLl102.91 106.42 107.87112.41 114.82118.71 121.75 127.60 126.91131.29 55 565772 7374 75 ·76 7778 79 8081 828384 85 86 Cs Ba *La HfTa W Re Os IrPt Au Hg TIPb BiPo AtRn , 132.91 137.33138.91178.49 180.95183.85 186.21 1C)0.2 192.2195.08 196.97200.59204.38 207.2 208.98 (209) (210)(222) 87 88 89 104 105106 107 108 109 110111 112 Fr RatAc RfDb Sg Bh HsMt § § § §Notyetnamed (223) 226.02 227.03 (261)(262)(263) (262)(265) (266) (269)(272) (277) 58 59 60 6162 6364 6566 676869 70 71 Ce PrNd Pm 8m EuGd TbDyHo ErTm YbLu 140.12 140.91144.24 (145)150.4 151.97 157.25158.93162.50 164.93167.26 168.93 173.04174.97 90 91 92 939495 96 97 9899100 101 102103 Th Pa U Np PuAm Cm Bk Cf EsFm Md NoLr 232.04 231.04 238.03237.05 (244) (243) (247) (247) (251)(252)(257) (258) (259)(260)
~artA I CHEMISTRY Section I Time--: 1hour and30minutes NO CALCULATOR MAYBEUSEDWITH SECTION I. Note: Forallquestions, assumethatthetemperature is298 K,the pressure is1.00 atmosphere, andsolutions are aqueous unlessotherwise specified. T = temperature P = pressure V = volume S = entropy H = enthalpy G = Gibbs freeenergy R = molar gasconstant n = number ofmoles M= molar , m = molal L, mL = liter(s), milliliter(s) g = gram(s) nm = nanometer(s) atm = atmosphere(s) mID Hg = millimeters ofmer ry J, kJ = joule(s), kilojoule(s) V = volt(s) mol = mole(s) Directions: Eachsetoflettered choices belowreferstothe numbered statements immediately followingit.Select the one lettered choicethatbest fitseach statement andthen fillinthe corresponding ovalonthe answer sheet.A choice maybeused once, morethanonce, ornot atall ineach set. Consider atomsofthe following elements.Assume that theatoms areinthe ground state. (A) S (B) Ca (C) Ga (D) Sb (E) Br 1. The atom thatcontains exactlytwounpaired electrons 2. The atom thatcontains onlyoneelectron inthe highest oc p~ed energysublevel Unauthorized copyingorreuse of any part ofthis page isillegal. (A) CO 2 (B) H 2 0 (C) CH 4 ' (D) C 2 H 4 (E) PH3
~artA I Questions 6-7refer tothe following solid compounds. Questions 8-10refer tothe following gasesat ooe and 1atm. (A) PbS0 4 (B)CuO (C) KMn0 4 (D) KCl (E) FeCl 3 (A) Ne (B) Xe (C) 02 (D) CO (E) NO 8. Has anaverage atomicormole lar speedclosest to that ofN 2 mole les at aoc and1atm (A) H2SeOiaq) + 2 Cl-(aq) + 2 H+(aq) ~H2Se0 3 (aq) + Clig) + H20(I) (B) Ss(s) + 8 02(g) ~ 8 S02(g) (C) 3 Br2(aq) + 6 OH-(aq) ~ 5Br-(aq) + Br0 3 -(aq) + 3 H20(I) (D) Ca2+(aq) + SOl-(aq) ~ CaS0 4 (s) (E) PtCI 4 (s) + 2Cl-(aq) ~ PtCll-:(aq) 13. Areaction inwhich thesame reactant undergoes both oxidation andreduction Unauthorized copyingorreuse of any part ofthis page isillegal.
~artB I Directions: Eachofthe questions orincomplete statementsbelowisfollowed byfive suggested answersor completions. Selecttheone that isbest ineach caseandthen fillinthe corresponding ovalonthe answer sheet. Questions 15-16relate tothe graph below. The graph shows thetemperature ofapure substance asit is heated ataconstant rateinan open vessel at1.0 atm pressure. Thesubstance changesfromthesolid to the liquid tothe gas phase. .17. Inwhich ofthe following groupsarethe three species isoelectronic; i.e.,have thesame number of electrons? (A) S2-, K+,Ca2+ (B) Sc,Ti,V2+ (C) 0 2-, S2-, Cl- (D) Mg2+, Ca2+,Sr2+ (E) Cs,Ba 2+, La 3+ I I I I I I I I t 2 t 3 Time .-.. 1.5 S •.... cd '-' II) 1.0 l-< ~ VJ VJ II) 0.5 l-< D.< 2040 60 80100 Temperature (0C) 15. The substance isatits normal freezing pointat time (A) t 1 (B) t 2 (C) t 3 (D) t 4 (E) t 5 18. The phase diagram forthe pure substance Xis shown above. Thetemperature ofasample of pure solid Xisslowly raisedfromlOoCto lOO°C ataconstant pressure of0.5 atm. What istl,le expected behavi.orofthe substance? (A) ItfITst melts toaliquid andthen boils atabout 70°C. (B) ItfITst melts toaliquid andthen boils atabout 30°C. (C) Itmelts toaliquid atatemperature ofabout 20°C andremains aliquid untilthe temperature isgreater than100°C. (D) Itsublimes tovapor atan equilibrium temperature ofabout 20°C. (E) Itremains asolid untilthetemperature is greater thanlOO°C. 16. Which ofthe following bestdescribes what happens tothe substance between t 4and t 5? (A) The mole les areleaving theliquid phase. (B) The solid andliquid phases coexist in equilibrium. (C) The vapor pressure ofthe substance is decreasing. (D) The average intermole lar distanceis decreasing. (E) The temperature ofthe substance is increasing. Unauthorized copyingorreuse of any part ofthis page isillegal.
~artB I 19. Inwhich ofthe following speciesdoessulfur have the same oxidation numberasitdoes in_ H Z S0 4 ? (A) H Z S0 3 (B) SzOl- (C) Sz- CD) S8 (E) SOzClz 20. Aflask contains 0.25mole ofSOz(g), 0.50mole of CH4(g), and0.50 mole of0zCg). Thetotal pressure ofthe gases inthe flask is800 mm Hg. What isthe partial pressure ofthe S02(g) inthe flask? (A) 800mmHg (B) 600mmHg (C) 250mmHg (D) 200mmHg (E) 160mmHg .•,.- . . . 21. Inthe lab0ratory, Hz(g) canbeproduced by adding whichofthe following to1 M HCl(aq) ? I. 1 M NH3(aq) IT. Zn(s) ill. NaHC0 3 (s) (A) Ionly (B) IIonly (C) illonly (D) Iand IT only (E) I, IT, and ill 22. Inliquid ammonia, thereaction represented above oc rs. Inthe reaction NH4+acts as (A) acatalyst (B) both anacid andabase (C) theconjugate acidofNH3 (D) thereducing agent (E) theoxidizing agent Unauthorized copyingorreuse of any part ofthis page isillegal. 23. Neutron bombardment ofuranium caninduce Ul••. reaction represented above.Nuclide Xiswhich of the following? (A) ~Br 24. Acompound contains1.10molofK, 0.55 molofTe, and 1.65 molof0.What is the simplest formulaofthis compound? (A) KTeO (B) KTezO (C) K 2 Te0 3 (D) KzTe06 (E) K4Te06 25. "W?at i~,the stalldard ~nthalpychange,!:i.H",for the reaction represented above? (!:i.H; ofCzHzCg) is230 kJmol-I; !:i.H; ofC6~(g) is83 kJmol-I.) (A) -607 kJ (B) -147 kJ (C) -19kJ (D) +19kJ (E) +773 kJ 26. Approximately whatmassofCUS04• 5H z O (250 gmol-I) isrequired toprepare 250mL of 0.10 M copper(II) sulfatesolution? (A) 4.0 g (B) 6.2 g (C) 34 g (D) 85 g (E) 140g
Unauthorizedcopyingorreuse of any part ofthis page isillegal. ~artB 2 NO(g) +Gig) -7 2 NOig) 27. Apossible mechanism forthe overall reaction represented above isthe following. (1) NO(g) +NO(g) -7 N Z 02(g) slow (2) N20 Z (g) +02(g) -7 2N02(g) fast Which ofthe following rateexpressions agreesbestwith this possible mechanism? (A) Rate = k[NOf (B) Rate = k ~~1 [NO]2 (C) Rate = k-- [°2] CD) Rate = k[NO]2[Oz] (E) Rate = k[N 2 0 Z ][Oz] I 21
~artB I 28. Ofthe following compounds, whichisthe most ionic? (A) SiCl 4 (B) BrCI (C) PCl 3 CD) Cl2 0 (E) CaCl2 29. The best explanation forthe fact that diamond is extremely hardisthat diamond crystals (A) aremade upofatoms thatareintrinsically hard because oftheir electronic structures (B) consist ofpositive andnegative ionsthatare strongly attracted toeach other . (C) aregiant mole les inwhich eachatom forms strong covfl.lent bondswithallofits neighboring atoms (D) areformed underextreme conditions of temperature andpressure (E) contain orbitals orbands ofdelocalized electrons thatbelong nottosingle atomsbut to each crystal asawhole 30. At25°C, aqueous solutions withapH of8have a hydroxide ionconcentration, [OH-],of (A) 1 x 10- 14 M (B) 1 x 10- 8 M (C) 1 X 10- 6 M (D) 1 M (E) 8M Unauthorized copyingorreuse of any part ofthis page isillegal. 31. What volume of 02(g) isrequired toreact with excess CS2(1) toproduce 4.0Lof CO2 (g) ? (Assume allgases aremeasured atO°C and1atm.) (A) 12L (B) 22.4 L (C) j. x22.4 L (D) 2x 22.4 L (E) 3x 22.4 L 32. Which ofthe following oxidesisagas at25°C and 1atm? (A) Rb 2 0 (B) N 2 0 (C) Na 2 0 2 CD) Si02 (E) La203
Thegraph below showsthetitration rvethat results when100.mLof0.0250 M acetic acidis titrated with0.100 M NaOH. I ;, ? - ,.... X V Wj - 14.0 12.0 10.0 pH 8.0 6.0 4.0 2.0 0.0 0510 1520 25 303540 45 mL of0.100 M NaOH Added 33. Which ofthe following indicators isthe best choice for this titratio~7 pHRange of Color Change 3.2 -4.4 4.8 -6.0 6.1- 7.6 8.2 -10.0 11.0 -12.4 (A) Methyl orange (B) Methy Ired (C) Bromothymol blue (D) Phenolphthalein (E) Alizarin 34. What partofthe rve corresponds tothe optimum buffer actionforthe acetic acid/acetate ionpair? (A) Point V (B) Point X (C) Point Z CD) Along allofsection WY (E) Along allofsection yz Unauthorized copyingorreuse of any part ofthis page isillegal. ~artB I 35. Asolution ismade bydissolving anonvolatile solute inapure solvent. Compared tothe pure solvent, thesolution (A) hasahigher normal boilingpoint (B) hasahigher vaporpressure (C) hasthesame vapor pressure (D) hasahigher freezing point (E) ismore nearly ideal 36. Asample ofasolution ofan unknown wastreated with dilute hydrochloric acid.Thewhite precipitate formed wasfiltered andwashed withhotwater. A few drops ofpotassium iodidesolution were added tothe hot water filtrate andabright yellow precipitate wasproduced. Thewhite precipitate remaining onthe filter paper wasreadily soluble in ammonia solution.Whattwoions could have been present inthe unknown? (A) Ag+(aq) andHgl+(aq) (B) Ag+(aq) andPb 2 +(aq) (C) Ba2+(aq) andAg+(aq) (D) Ba2+(aq) andHgl+(aq) (E) Ba2+(aq) andPb2+(aq)
~artB ! 37. When thereaction represented bythe equation aboveisat equilibrium at1atm and25°C, theratio [CO 2-] [ 3] can beincreased bydoing ;Vhich ofthe following? HC0 3- (A) Decreasing thetemperature (B) Adding acid (C) Adding acatalyst (D) Diluting thesolution withdistilled water (E) Bubbling neongasthrough thesolution 38. A0.10 M aqueous solutionofsodium sulfate, Na2 S0 4, isabetter conductor ofelectricity than a 0.10 M aqueous solutionofsodium chloride, NaCl. Which ofthe following bestexplains this observa~on? (A) Na Z S0 4 ismore soluble inwater than NaCI is. (B) NaZ S0 4 hasahigher molarmassthan NaCl has. (C) Toprepare agiven volume of0.10 M solution,. themass ofNa Z S0 4 neededis more thantwice themass ofNaG neooed. (D) More moles ofions arepresent inagiven volume of0.10 M Na Z S0 4 thaninthe same volume of0.10 M NaCl. (E) The degree ofdissociation ofNa Z S0 4 in solution issignificantly greaterthanthat of NaCl. Unauthorized copyingorreuse of any part ofthis page isillegal.
Unauthorizedcopyingorreuse of any part ofthis page isillegal. ~. PartB I -- .-- - ~ / K 2 S0 4 / / /KN0 3 / / ----- NaCI..,.L.. ./ / ~~ - - K 2 Cr0 4- -- .r - .--" -- -- CeiS04)3 -,- I 'i:' ~ 160 ~ 00 o o :: 120 o 0.. 8 ::l - o
~artB I (A) 22.4rnL (B) 44.8rnL (C) 224mL (D) 448 mL (E) 896 mL 43. The atomic massofcopper is63.55. Giventhat , there areonly twonaturally oc rring isotopes copper, 63Cuand6SCu, thenatural abundance of the 6SCu isotope mustbeapproximately (A) 90% (B) 70% (C) 50% (D) 25% (E) 10% 40. Anexcess ofMg(s) isadded to100. mLof 0.400 MHCl. At aoc and1atm pressure, what volume of Hz gascan beobtained? 41. When solidNH 4 SCN ismixed withsolid Ba(OH)z inaclosed container, thetemperature drops andagas isproduced. Whichofthe fol- lowing indicates thecorrect signsfor f!.G, MI, and /)$ fortheprocess? f!.G (A) (B) (C) - (D) + (E) +_. 44. Which ofthe following properties generally decreases acrosstheperiodic tablefrom sodium to chlorine? (A) First ionization energy (B) Atomic mass (C) Electronegativity (D) Maximum valueofoxidation number (E) Atomic radius 45. What isthe mole fraction ofethanol, CzHsOH, in an aqueous solutionthatis46 percent ethanolby mass? (Themolar massofCzHsOH is46 g;the molar massof HzO is18 g.) (A) 0.25 (B) 0.46 (C) 0.54 (D) 0.67 (E) 0.75 42. Atacertain temperature, thevalue ofthe equilibrium constant, K, for the reaction represented aboveis2.0 X lO s. What isthe value of K for the reverse reaction atthe same temperature? (A) -2.0 x lO- s (B) 5.0 x 10-6 (C) 2.0 X lO- s (D) 5.a x lO- s (E) 5.0 x 10- 4 46. The effeCtive nuclearcharge~xperienced by the outermost electronofNa isdifferent than the effective nuclearchargeexperienced bythe outermost electronofNe. This difference best accounts forwhich ofthe following? (A) Nahasagreater density atstandard conditions thanNe. (B) Nahasalower fIrstionization energy than Ne. (C) Nahasahigher melting pointthanNe. (D) Nahas ahigher neutron-to-proton ratio than Ne. (E) Nahasfewer naturally oc rring isotopes than Ne. Unauthorized copyingorreuse of any part ofthis page isillegal.
~artB I 47. Which ofthe following isacorrect statement about reaction order? (A) Reaction ordercanonly beawhole number. (B) Reaction ordercanbedetermined onlyfrom the coefficients ofthe balanced equationfor the reaction. (C) Reaction ordercanbedetermined onlyby experiment. (D) Reaction orderincreases withincreasing temperature. (E) Asecond-order reactionmustinvolve atleast two different compounds asreactants. 48. Sodium chloride isLEAST solubleinwhich of the following liquids? (A) H 2 0 (B) CC14 (C) HF (D) CH30H (E) CH3COOH 49. When theequation aboveiscorrectly balanced andallcoefficients areredi:lced tolowest whole-number terms, the coefficient forH+(aq) is (A) 2 (B) 4 (C) 6 (D) 8 (E) 14 Unauthorized copyingorreuse of any part ofthis page isillegal.
~artB I 50. Which ofthe following represents acceptable laboratory practice? (A) Placing ahot object onabalance pan (B) Using distilled waterforthe [mal rinse ofa buret before fillingitwith standardized solution (C) Adding aweighed quantityofsolid acidto a titration flaskwetwith distilled water (D) Using 10rnL ofstandard strength phenolphthalein indicatorsol~tionfor titration of25 rnL ofacid solution (E) Diluting asolution inavolumetric flaskto its [mal concentration withhotwater 51. True statements aboutthereaction represented aboveinclude whichofthe following? .. ,.- 1. Cti{s) actsasan oxidizing agent. II. The oxidation stateofnitrogen changesfrom+5to+2. III. Hydrogen ionsareoxidized toform H 2 0(l). (A) Ionly (B) IIonly (C) IIIonly (D) Iand II (E) IIand III Unauthorized copyingorreuse of any part ofthis page isillegal. 52. Propane gas,~Hg, burnsinexcess oxygen gas. When theequation forthis reaction iscorrectly balanced andallcoefficients arereduced totheir lowest whole-number terms,thecoefficient for 02 is (A) 4 (B) 5 (C) 7 (D) 10 (E) 22
~artB I 53. According tothe VSEPR model,theprogressive decrease inthe bond angles inthe series of mole les CH4,NH3•andH20 isbest accounted forbythe (A) increasing strengthofthe bonds (B) decreasing sizeofthe central atom (C) iricreasing electronegativity ofthe central atom (D) increasing numberofunshared pairsof electrons (E) decreasing repulsionbetweenhydrogen atoms 54. Which ofthe following mustbetrue forareaction for which theactivation energyisthe same for both theforward andthereverse reactions? (A) Acatalyst ispresent. (B) The reaction ordercanbeobtained directly from thebalanced equation. (C) Thereaction orderiszero. (D) ~H forthe reaction iszero. (E) ~s forthe reaction iszero. Time (days) 012 3 4 5 6 7 .. 0. 10 . .. 20 . - - % Reactant remaining 10079 63 5040 3125 20 10 1 55. Areaction wasobserved for20days andthepercentage ofthe reactant remaining aftereachday was recorded inthe table above. Which ofthe following bestdescribes theorder andthehalf-life of the reaction? Reaction Order Half-life (days) (A) First 3 (B) First 10 (C) Second' 3 (D) Second 6 (E) Second 10 Unauthorized copyingorreuse of any part ofthis page isillegal.
~arlB I 56. The boiling pointsofthe elements h.elium,neon, argon, krypton, andxenon increase ill that order. Which ofthe following statements accountsfor this increase? (A) TheLondon (dispersion) forcesincrease. (B) Thehydrogen bondingincreases. (C) Thedipole-dipole forcesincrease. (D) Thechemical reactivity increases. (E) Thenumber ofnearest neighbors increases. 57. The rateofacertain chemical reactionbetween substances Mand Nobeys therate lawabove. The reaction isfIrst studied with[M]and[N] each 1x 10-3 molar. Ifanew experiment is conducted with[M]and[NJeach 2x 10- 3 molar, thereaction ratewillincrease byafactor of (A) 2 (B) 4-' (C) 6~; (D) 8 (E) 16 Unauthorized copyingorreuse of any part ofthis page isillegal. 58. When 8.0gof N2H4 (32gmol-I) and92gof N2 0 4 (92gmol-I) aremixed together andreact according tothe equation above,whatisthe maximum massofH2 0 thatcanbeproduced? (A) 9.0 g (B) 18 g (C) 36g (D) 72 g (E) 144 g 59. All ofthe halogens intheir elemental format 25°C and1atm are (A) conductors ofelectricity (B) diatomic mole les (C) odorless (D) colorless (E) gases
~artB 60. According tothe balanced equationabove,howmany moles of Cl0 2 -(aq) areneeded toreact completely with 20. mL of0.20 M KMn04 solution? (A) 0.0030 mol (B) 0.0053 mol (C) 0.0075 mol (D) 0.013 mol (E) 0.030 mol 61.How can100. mLofsodium hydroxide solution with apH of13.00 beconverted toasodium hydroxide solutionwithapH of12.00 ? (A) Bydiluting thesolution withdistilled water to atotal volume of108 mL (B) Bydiluting thesolution withdistilled water to atotal volume of200 mL ., (C)Bydiluting thesolution withdistilled water to atotal volume of1.00 L (D) Byadding 100.mLof0.10 M HCl (E) Byadding 100.mLof0.10 M NaOH Unauthorized copyingorreuse of any part ofthis page isillegal.
~artBHHH I 1I' H-C-C-C-Br 1II H HH 63. Mixtures thatwould beconsidered buffersinclude which ofthe following? .. H HH I II Br-C-C-C-H III H H H I.O.I0MHCI+O.I0MNaCI II.O.I0MHF+0.lOMNaF m.O.lOMHBr+0.l0MNaBr (A) Ionly (B) IIonly (C) monly (D) Iand II (E) IIand m 62. Which ofthe following structuralformulas represents anisomer ofthe compound thathas the structural formularepresented above? H HH I II H-C-C-C-H I I I I H' Br H 64. Ascorbic acid,H2C6~06(s), isadiprotic acid with K 1 = 7.9 X 10- 5 and K 2 = 1.6 X 10- 12. In a0.005 M aqueous solutionofascorbic acid, which ofthe following speciesispresent inthe lowest concentration? H HH ~' I II H--C-C-C-H ,I II. H HBr (A) H 2 0(l) (B) H 3 0+(aq) (C) H2C6~06(aq) (D) HC6~06 -(aq) (E) C6~Oi-(aq) H HH I I I Br-C-C-C-Br II I H H H 65. Which ofthe foJ)owing substances isLEAST soluble inwater? H HHH I II I H-C-C-C-C-Br III I H HH H (A) (NH4)2S04 (B) KMn0 4 . (C) BaC0 3 (D) Zn(N03h (E) Na 3 P0 4 66. A2L container willhold about 4gof which of the following gasesatO°C and1a1m? (A) S02 (B) N 2 (C) CO2 (D) C4H g (E) NH 3 Unauthorized copyingorreuse of any part ofthis page isillegal.
67.Which ofthe following describesthechanges in forces ofattraction thatoc r asH 2 0 changes phase fromaliquid toavapor? (A) H-O bondsbreakasH-H and0-0 bonds form. (B) Hydrogen bondsbetween H20mole les are broken. (C) Covalent bondsbetween H20mole les are broken. (D) Ionic bonds between H+ions andOH- ions arebroken. (E) Covalent bondsbetween H+ions andH 2 0 mole les becomemoreeffective. 100 90 """' 80 u ~ 70 0 •... ~ 60 ~ S' 50 0 Eo-< 40 30 20 0 1 2 34 5 67 Time (minutes) 68. Liquid naphthalene at95°C wascooled to30°C, as represented inthe cooling rveabove. From which section ofthe rve canthemelting point of naphthalene bedetermined? (A) A (B) B (C) C (D) D (E)E Unauthorized copyingorreuse of any part ofthis page isillegal. ~artB 69. If200. mLof0.60 M MgCI2(aq) isadded to 400. mLofdistilled water,whatisthe concentration of Mg 2 +(aq) inthe resulting solution? (Assumevolumesareadditive.) (A) 0.20M (B) 0.30M (C) OAOM (D) 0.60M (E) 1.2M 70. Ofthe following puresubstances, whichhasthe highest melting point? (A) S8 (B) 1 2 (C) Si0 2 (D) S02 (E) C6~ 71. Inthe electroplating ofnickel, 0.200faraday of electrical chargeispassed through asolution of NiS04• Whatmassofnickel isdeposited? (A) 2.94g (B) 5.87g (C) 11.7 g (D) 58.7g (E) 294g 72. Acolorless solutionisdivided intothree samples. The following testswere performed onsamples of the solution. . Sample Test Observation 1 Add H+(aq) Nochange 2 Add NH 3 (aq) Nochange 3 Add SOl-(aq) Nochange Which ofthe following ionscould bepresent in the solution ataconcentration of0.10 M ? (A) Ni 2 +(aq) (B) Al3 +(aq) (C) Ba2+(aq) (D) Na+(aq) (E) COl-(aq)
~artB I 73. Which ofthe following istrue forany substance undergoing theprocess represented aboveatits normal melting point? (A) JiS < 0 (B) JiB = 0 (C) JiB = TJiG (D) TJiS = 0 (E) JiB = TJiS 74. Apure, white crystalline soliddissolves inwater to yield abasic solution thatliberates agas when excess acidisadded toit. On the basis ofthis information, thesolid could be (A) KN0 3 (B) K 2 C0 3 I (C) KOH (D) KHS0 4 (E) KCt. 75. Inasaturated solutionofZn(OHh at25°C, .-:.\ the value of[OH-] is2.0 x10-6 M. What is ihe'; value ofthe solubility-product constant, K for . ~' Zn(OH)2 at25°C? (A) 4.0x10-18 (B) 8.0X10-18 (C) 1.6 X 10- 17 (D) 4.0 X 10- 12 (E) 2.0X10-6 Unauthorized copyingorreuse of any part ofthis page isillegal.
Foragiven rangeofmultiple-choice scores,thistable shows thepercentage ofstudents receiving eachAPgrade. If you have cal lated themulriple-choice score(Weighted SectionIScore) byusing theformula shownin Table 4.2,youcanusethis table tofigure outthemost likely gradethatthestudent wouldreceive basedonlyon that mulriple-choice score.
Ifyou giveyour students the2002 exam forpractice, youmay want toanalyze theirresults tofind overall strengths and weaknesses intheir understanding ofAP Chemistry. Thefollowing diagnostic worksheetwillhelp youdothis; feel free tophotocopy anddistribute itto your students forcompletion. 1. Ineach section, students shouldinsertacheck markforeach correct answer. 2. Add together thetotal number ofcorrect answers foreach section. 3. Compare thestudent's numberofcorrect answers foreach section withtheaverage number correct for that section. In addition, undereachitem, thepercent ofAP students whoanswered correctlyisshown, sostudents cananalyze their performance onindividual items. This information willbehelpful indeciding howstudents shouldplantheir study time.Please notethatoneitem may appear inseveral different categories, asquestions cancross overdifferent topics. Question # I 12 17 194344 46 Correct/Incorrect Percent ofstudents answering correctly. 63 70 70 72 49 70 62 Question # 34 5 28 29 53 56 67 Correct/Incorrect Percent ofstudents anSwering correctly. 7454 7568 5162 62 52 "" ~; . . ~.;~ .. Structure ofMatter/Nuclear"Chemistry (Averagenumbercorrect':0.4·out of1) Question # 23 Correct/Incori-e"~t Percent ofstudents answering correctly. 37 Question # 8 910 20 3166 Correct/Incorrect Percent ofstudents answering correctly. 417159 67 5641
Question # 1516 1868 CorrectlIncorrect Percent ofstudents answering correctly. 5658 69 51 Question # 26 35 38 39 4548 61 69 CorrectlIncorrect Percent ofstudents answering correctly. 5653 61 13 44 48 22 46 Question # 11 12 1314 1922 303351 61 6371 Correct/Incorrect I Percent ofstudents answering correctly. 82 30 6114 12 51 12 104922 2513 Question # 24 31 40 43 49 52 5860 CorrectlIncorrect Percent ofstudents answering correctly. 82 56 2949 3111 4153 Question # 3437 42 64 75 CorrectlIncorrect Percent ofstudents answering correctly. 344524 38 21 Question # 2747 54 55 57 CorrectlIncorrect Percent ofstudents answering correctly. 45 39 43 55 52 Question # 2541 54 73 Correct/Incorrect Percent ofstudents answering correctly. 66 43 43 34
Question # 6721 3244 59 62 6570 74 Co rrect/Inco rrect - Percent ofstudents answering correctly. 5561 48 69 1040 28 4529 21 Question # 3336 5068 72 Correct/Incorrect Percent ofstudents answering correctly. 10 28 16 51 35 Question # 2024 25 26 4042 43 45 575860 66 697175 Correct/Incorrect , Percent ofstudents answering correctly. 6182 665629 24 4944 52 41 5341 46 1321