AP 化学.docx

AP 化学.docx

《AP 化学.docx》由会员分享，可在线阅读，更多相关《AP 化学.docx（17页珍藏版）》请在冰豆网上搜索。

AP化学

ChemAPHomePage

Howtotakethissampletest:

1.Aquestionwillbeshownwithallthechoicesfollowing.

2.Onyourownpieceofpaper,markyourresponse.

3.Oncefinished,checkyouranswersbyselectingthelinktitledM.C.Answersonthebottomofthepage.

4.Thecorrectanswerswillbeshownontheanswerpage.

5.YoumayreturntothemainscreenbyselectingthelinktitledMainonthetopofthepage.

1.Whichisalistofelementsinorderofincreasingmetalliccharacter?

       A.Si,P,S

       B.As,P.N

       C.Sr,Ca,Mg

       D.Br,Se,As

       E.Na,Ne,F

2.Theelectronconfigurationoftheoxideionismostsimilartotheelectronconfigurationofthe

       A.Sulfideion

       B.Nitrideion

       C.Oxygenatom

       D.Nitrogenatom

       E.Fluorineatom

3.ThevalueofPlank’sconstantis6.63*10-34J*s.Thevelocityoflightis3.0*108m*s-1.Whichvalueisclosesttothewavelengthinnanometersofaquantumoflightwithfrequencyof8*1015sec-1?

       A.3*107

       B.4*101

       C.5*10-18

       D.2*10-25

       E.1*10-25

4.Whatisthenumberofhalf-filledorbitalsinanatomofchromium?

       A.0

       B.2

       C.4

       D.6

       E.12

5.Whatisthenumberofelectronsinanatomofscandiumthathaveanlquantumnumberof1?

       A.1

       B.3

       C.4

       D.6

       E.12

6.TheelectronconfigurationofatomsofelementXisshownbelow

       [Ar]4s23d10

   Whichisthemostlikelyformulaforthecompoundofthiselementandoxygen?

       A.XO

       B.X2O

       C.XO2

       D.X2O3

       E.X2O5

7.Whichlistsspecieswiththesameelectronconfiguration?

       A.Mg,Ca,Sr

       B.Mg2+,Ca2+,Sr2+

       C.S2-,Cl-,K+

       D.Fe,Co,Ni

       E.F-,S2-,As3-

8.Oneatomicmassunit（amu）isclosesttothemassof

       A.Oneproton

       B.Oneelectron

       C.Theoxygen-16nucleus

       D.Thecarbon-12nucleus

       E.6.02*1023atomsofhydrogen

9.Allofthesemolecularshapescanbeexplainedbydsp3hybridizationofelectronsonthecentralatomEXCEPT

       A.Linear

       B.T-shape

       C.See-saw

       D.Octahedral

       E.Trigonalbipyramidal

10.WhichspecieshasaLewisdotdiagramthatdoesnotillustratetheoctetrule?

       A.NO3-

       B.NH3

       C.NH4+

       D.N2

       E.NO2

11.Whichsubstancehasthegreatestioniccharacter?

       A.Cl2O

       B.NCl3

       C.PbCl2

       D.BaCl2

       E.Ch2Cl2

12.TheshapeoftheIO3- ionisbestdescribedas

       A.see-saw

       B.T-shaped

       C.Tetrahedral

       D.Trigonalplaner

       E.Trigonalpyramidal

13.PibondingisfoundinallofthefollowingEXCEPT:

       A.N2

       B.SCN-

       C.CO32-

       D.AsH3

       E.C（graphite）

14.Whatisthenumberofsp3hybridorbitalsassociatedwiththehydroniumion,H3O+?

       A.none

       B.two

       C.three

       D.four

       E.six

15.Whichchangeincreasesthemeanfreepathofmoleculesinasampleofgas?

       A.increaseinpressureatconstanttemperature

       B.increaseindensityatconstanttemperature

       C.increaseintemperatureatconstantpressure

       D.increaseintemperatureatconstantvolume

       E.increaseinpressureatconstantvolume

16.Whichoccurswhenasubstanceisconvertedfromliquidtogasatthenormalboilingpoint?

           I.Potentialenergyofthesystemincreases.

          II.Thedistancebetweenmoleculesincreases.

         III.Theaveragekineticenergyofthemoleculesincreases.

       A.Ionly

       B.IIonly

       C.IandIIonly

       D.IIandIIIonly

       E.I,II,andIII

17.Thelatticepointsofacrystalofhydrogeniodide,HI,areoccupiedby

       A.HImolecules

       B.HatomsandIatoms

       C.H+cationsandI-anions

       D.H2I+cationsandI-anions

       E.H2moleculesandI2molecules

18.Whichelementformsanoxidethatisamolecularsolid?

       A.sodium

       B.argon

       C.carbon

       D.silver

       E.iron

19.WhatisthefinalconcentrationofCl-ionwhen250mLof0.20MCaCl2solutionismixedwith250mLof0.40MKClsolution?

（Assumeadditivevolumes.）

       A.0.10M

       B.0.20M

       C.0.30M

       D.0.40M

       E.0.60M

20.Whatvolumeofwatershouldbeaddedto0.40Lof6.0MH2SO4solutiontoproduceasolutionthatis2.0MH2SO4?

       A.0.40L

       B.0.80L

       C.1.2L

       D.1.6L

       E.2.4L

21.Whatisthepercentmethanolbymassinasolutionthatcontains20gramsofmethanol,CH3OH,in30gramsofwater?

       A.20%

       B.33%

       C.40%

       D.60%

       E.67%

22.Comparedtowater,a0.20MsolutionofNaClwillhaveallofthefollowingpropertiesEXCEPT:

       A.greaterdensity

       B.lowervaporpressure

       C.lowerboilingpoint

       D.lowerfreezingpoint

       E.greaterosmoticpressure

23.Inaspontaneous,exothermicdissolvingprocess,whichofthesevalueshasanegativesign?

           I./\Gsoln

          II./\Hsoln

         III.T

       A.Ionly

       B.IIIonly

       C.IandIIonly

       D.IIandIIIonly

       E.I,II,andIII

24.WhichoftheseGroup2oxideshasthegreatestpercentbymassoxygen?

       A.bariumoxide

       B.berylliumoxide

       C.calciumoxide

       D.magnesiumoxide

       E.strontiumoxide

25.Whichoxidesofmanganese,Mn,havepercentbymassofmanganesethatisgreaterthan50%.

           I.MnO

          II.MnO2

         III.Mn2O2

       A.IIonly

       B.IIIonly

       C.IandIIIonly

       D.IIandIIIonly

       E.I,II,andIII

26.Whichsamplecontainsthegreatestnumberofnitrogenatoms?

（AllmeasurementstakenatSTP.）

       A.0.20molN2O4（g）

       B.0.40molN2（g）

       C.40.LNO2（g）

       D.40.gNH3（g）

       E.80.gN2O4（g）

27.    Al3++3e------>Al0

        Inthehalf-reactionshownabove,the3e-represents

       A.3*96,500electrons

       B.3*（6.02*1023）electrons

       C.3*（6.02*1023）coulombs

       D.3/27*96,500electrons

       E.3/27*（6.02*1023）electrons

28.AllofthefollowingapplytothereactionA（g）+B（g）----->C（g）asitiscarriedoutatconstanttemperatureinarigidcontainerEXCEPT:

       A.Thetotalpressuredecreases

       B.Therateofreactiondecreases

       C.Theentropyofthesystemdecreases

       D.ThenumberofmoleculesofCdecreases

       E.ThefrequencyofcollisionsbetweenmoleculeAandBdecreases

       Rate=k[A]2[B]

    Atthebeginningofonetrialofthisreaction,[A]=4.0and[B]=1.0.Theobservedratewas0.048molC*L-1*sec-1

29.Thevalueoftherateconstantforthisreactionisclosestto

       A.3*102

       B.4*100

       C.8*10-1

       D.1*10-2

       E.3*10-3

30.Whichisthelabelfortherateconstant?

       A.mol2*L-2*sec-1

       B.L*mol-2*sec-1

       C.L2*mol-2*sec-1

       D.L2*sec*mol-1

       E.L2*sec*mol-2

31.AllofthefollowingdecreasetherateofagasphasereationEXCEPT

       A.addinginertgas

       B.removingthecatalyst

       C.increasingthevolume

       D.loweringthetemperature

       E.decreasingtheconcentrationofoneofthereactants

Rate=k[Br-][BrO3-][H+]2

32.Theoverallorderforthisreactionis

       A.2

       B.3

       C.4

       D.6

       E.12

33.ThepHofa0.010Msolutionofaweakacidis4.0.Whatisthevaluefortheionizationconstant,Ka,forthisacid?

       A.10-2

       B.10-4

       C.10-6

       D.10-8

       E.10-10 

34.TheKspforPbCl2is1.6*10–5.WhichmaximumamountofNaCl（s）maybeaddedto1.0Lof0.010Pb（NO3）2solutionwithoutcausingprecipitatetooccur?

       A.1.6*10-5mol

       B.3.2*10-5mol

       C.1.6*10-3mol

       D.3.2*10-3mol

       E.1.6*10-2mol

35.                   2O3（g）<===>3O2（g）        Kp=2.5*1012

            Considerasystematequilibriumbasedonthereactionabove.Insuchasystem,theconcentrationofO2（g）is

       A.constantandequaltotheconcentrationofO3（g）

       B.constantandlessthantheconcentrationofO3（g）

       C.constantandgreaterthantheconcentrationofO3（g）

       D.increasingandtheconcentrationofO3（g）isincreasing

       E.increasingandtheconcentrationofO3（g）isdecreasing

36.Themolarheatoffusion,/\Hfus,forwateris6.01kJ/mol.Whichexpressiongivesthemolarentropyoffusion,/\Sfus,inkJ/K*molforiceatitsnormalmeltingpoint?

       A.6.01/273

       B.6.01/298

       C.6.01*4.18

       D.6.01*273

       E.6.01*298

37.AllofthefollowingreactionsillustrateanincreaseinentropyEXCEPT:

       A.N2O4（g）----->2NO2（g）

       B.C6H6（l）----->C6H6（g）

       C.2KClO3（s）----->3O2（g）+2KCl（s）

       D.3Fe（s）+2O2（g）----->Fe3O4（s）

       E.C2H5OH（l）+3O2（g）----->2CO2（g）+3H2O（g）

38.Fortheburningo