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1、02-03学年第一学期02611班无机化学期中考试卷答案一、选择题(共10题20分)1.2分(6609)(C)2.2分(0563)(B)3.2分(3695)(C)4.2分(3548)(B)5.2分(3680)(D)6.2分(6508)(A)7.2分(3699)(B)8.2分(3546)(D)9.2分(3690)(D)10.2分(3514)(B)二、填空题(共7题20分)1.5分(3648)，NH3；，，NH3，Cl-Cu2+，NH3，2.5分(3139)(1)＝;(2)＜;(3)＞;(4)＞;(5)＝3.2分(0674)减小，增大，小4.2分(3486)化学反应方向，化学反应
2、限度，标准5.2分(3528)0.146.2分(0628)液氨的拉平效应7.2分(3513)0.144；694kPa。三、计算题(共4题30分)1.10分(3647)H2CO3+H+[]/[H2CO3]=K1/[H+]=4.2´10-7/1.0´10-7=4.2+H+[]/[]=K2/[H+]=4.7´10-11/1.0´10-7=4.7´10-4officiallyestablishedonJuly1,2013,Yibincity,formerlyknownasthebus,integratedoriginalrongzhoubuscompanyinYibincityand
3、Metrobuscompany,formedonlyinYibincityofaState-ownedpublictransportenterprises,thecompanyconsistsofoneortwo,thirdDivision.Integrationofpublictransportservicesisnotyetestablished所以[]的浓度相比之下可忽略。由物料平衡：[H2CO3]+[]=0.010与[]=4.2[H2CO3]解得：[]=8.1´10-3mol·dm-3[]=4.7´10-4[]=3.8´10-6(mol·dm-3)因为[Ba2+]=0
4、.010mol·dm-3所以[Ba2+][]=3.8´10-8>Ksp所以有BaCO3生成。2.10分(0422)①C3H6(g)+2O2(g)=3CO2(g)+3H2O(l)1=丙烷燃烧热②H2(g)+O2(g)=H2O(l)(H2O,l)=-286.0kJ·mol-1③C3H8(g)+5O2(g)=3CO2(g)+4H2O(l)Qv=-2213.0kJ·mol-1④C3H6(g)+H2(g)=C3H8(g)=-123.9kJ·mol-1④+③-②=①所以(1)=(4)+(3)–(2)因为(3)=ΔU+Δ(pV)=-2213.0+(-2.5)(8.314´298´10-3)
5、=-2219.2(kJ·mol-1)所以(1)=-123.9-2219.2-(-286.0)=-2057.1(kJ·mol-1)即：C3H6(g)的燃烧焓为-2057.1kJ·mol-1而(1)=3(H2O,l)+3(CO2,g)–(C3H6,g)所以-2057.1=3(-286.0)+3(-393.5)–(C3H6,g)(C3H6,g)=-18.6kJ·mol-13.5分(3649)(1)[H+]=(1.0´10-3+1.0´10-5)/2=5.0´10-4(mol·dm-3)pH=-lg[H+]=3.30(2)[OH-]=(1.0´10-4-1.0´10-5)/2=4.5
6、´10-5(mol·dm-3)pH=14+lg[OH-]=9.654.5分(3164)(1)设集气瓶中气体的体积为V99.7×1000×[1.00-(10.0/100)]V=────────────────=940(cm3)99.7-4.2(2)设干燥后气体的体积为V＇,99.7×1000×0.900V＇=───────────=900(cm3)99.7四、问答题(共4题30分)1.10分(6509)(1)2NH3(aq)+CO2(g)+H2O(l)(aq)+(aq)officiallyestablishedonJuly1,2013,Yibincity,formerlykno
7、wnasthebus,integratedoriginalrongzhoubuscompanyinYibincityandMetrobuscompany,formedonlyinYibincityofaState-ownedpublictransportenterprises,thecompanyconsistsofoneortwo,thirdDivision.Integrationofpublictransportservicesisnotyetestablished(1)AgCl(s)+2NH3(a
