內(nèi)容參考教案

MARKSCHEMEfortheOctober/November20139701Paper2(ASStructuredumrawmarkThismarkschemeispublishedasanaidtoteachersandcandidates,toindicatetherequirementsoftheexamination.ItshowsthebasisonwhichExaminerswereinstructedtoawardmarks.ItdoesnotindicatethedetailsofthediscussionsthattookceatanExaminers’meetingbeforemarkingbegan,whichwouldhaveconsideredtheacceptabilityofalternativeanswers.MarkschemesshouldbereadinconjunctionwiththequestionpaperandthePripalExaminerReportforTeachers.CambridgeispublishingthemarkschemesfortheOctober/November2013seriesformostIGCSE,GCEAdvancedLevelandAdvancedSubsidiaryLevelcomponentsandsomeOrdinaryLevelboth‘dot-and-cross’diagramsNH3ispyramidalortrigonalCH4is(i)nitrogenandhydrogenhave N–HbondhasadipoleHδ+bondingpairisunequally(moleculeisnotsymmetricaldipolesdonotcancel(NH3hashigherboilingpointthanexpectedfromMrvalueorhashigherboilingpointthanmethaneorNH3issolubleinthreecovalentN–H oneco-ordinate(dativecovalent)N–H 4oneionicbondbetweenNH+and 4[Total:PageMarkGCEAS/ALEVEL–October/November2(a)alkanesorparaffinsnot(1C9H20+14O2→9CO2+(b)carbon(names(COistoxicoraffectsorcombineswithorcarboncausesrespiratory(2C14H30+15O2→28C+30H2O2C14H30+29O2→28CO+orotherbalancedequationssuchC14H30+11O2→7C+7CO+C14H30+18O2→7CO+7CO2+enthalpychangewhen1molofaisburntinanexcessofoxygen/airunderstandardconditionsoriscompleycombustedunderstandardconditions

workingmustbeheatreleased=mcδT=250×4.18×=36157J=36.2(MrofC14H30=massofC14H30=1.00×0.763=0.7630.763gofC14H30produce36.2198gofC14H30=9394kJmol

[Total:green,yelloworangeorredoracceptchlorineandbrominebothiodinecorrectfor downthetherearemoreelectronsinthehencestrongervanderWaals’ 1s2s2p3s 1s2s2p3s3p3d4s 1s2s2p3s3p4s3dbothneededgasorlowboilingBrClhasfewerelectronsthanhenceweakervanderWaals’(acceptcoloursintherangeyellow,orange,red,initiallysolutionbeginstoturnafterseveralminutesblack/darkgreysolid(Cl2+2KI→2KCl+(BrCl+2KI→KCl+KBr+asoxidisingPageMarkGCEAS/ALEVEL–October/November (a)(i)structuralorfunctionalgroup ()R lcoholandcarboxylicacid–not S lcoholand T lcoholand (i)withcarboxylic (iv)withalcoholandcarboxylic n(CO2)= =0.001 ()0.002molofQ→0.001molof1molofQ→0.5molof n(H2)=

=0.002 ()0.002molofQ→0.002molof1molofQ→1molof Qisisomer withsodium2HOCH2CH2CO2H+Na2CO3→2HOCH2CH2CO2Na+H2O+correct withsodiumHOCH2CH2CO2H+2Na→NaOCH2CH2CO2Na+correct [Total:PageMarkGCEAS/ALEVEL–October/November WXYZno(4× productsareHHH [Total:com201310/11GCE97019701/232（AS）201310/11IGCSE、GCEcom第2頁(yè)評(píng)分方案大 GCEAS/ALEVEL–2013年10月/119701金字塔四面體“點(diǎn)十字”正確NH3CH41(i)δ-δ+N NH3MrNH3(1)N-H一個(gè)配位（配位共價(jià)）N–HNH4Cl(1)總數(shù)3GCEAS/ALEVEL201310/1197011C9H20+14O2→9CO2+10H2O(1)(1)(1)（必填名稱)CO2C14H3015O228C30H2O2C14H3029O228CO30H2OC14H3011O27C7CO15H20C14H3018O27CO7CO2(1)[1mol1(1)imcδT2504.1834.6(1)36157J36.2kJC14H30Mr198(1C14H301.000.7630.763g0.763gC14H3036.2198C14H309394kJmol–1(1)總數(shù)4GCEAS/ALEVEL201310/119701鹵素熔點(diǎn)/°C1017114黑色氯和溴均正確碘正確為固體(1)(1) 在族中，分子中有更多的電子，因此力更強(qiáng)(1)(1)氯1s22s22p63s23p63d104s24p51s22s22p63s23p64s23d104p5兩者都需要(1)1)(i)()氣體或低沸點(diǎn)液體BrCl的電子數(shù)比Br2少，因此較弱的力接受黃色、橙1(1)(1)1(i)()(i)(ivCl22KI2KClI2BrCl2KIKClKBrI21(1(1)(1(1)[5]:5GCEAS/ALEVEL201310/11970123 RST(1)1 Na2CO3i1(i)n(CO2)24.00.001240000.002molQ→0.001molCO21molQ→0.5molCO2(1)(i)n(H2)48.0240000.0020.002molQ→0.002molH21molQ→1molH2(1)QR2HOCH2CH