第9章课后参考答案-物理化学课后答案-考研试题文档资料系列.doc

第1题：负极：Zn=Zn2+(a1=0.1)+2e-正极：Zn2+(a2=0.5)+2e-=Zn总：Zn2+(a2=0.5)=Zn2+(a1=0.1)负极：H2(p1=0.1Mpa)=2H+2e-正极：2H+2e-=H2(p1=0.01Mpa)总：H2(p1=0.1Mpa)=H2(p1=0.01Mpa)第2题：负极：Sn2+=Sn4+2e-正极：2Fe3+2e-=2Fe2+电池表达式：Pt/Sn2+,Sn4+/Fe3+,Fe2+/Pt第3题：第4题：负极：H2(P)+2OH-(aq)=2H2O+2e-正极：HgO(s)+H2O(l)+2e-=2OH-(aq)+Hg(l)总：H2(P)+HgO(s)=Hg(l)+H2O(l)H2(P)+HgO(s)=Hg(l)+H2O(l)第5题：负极：Zn(s)=Zn2+(m=0.555mol.kg-1)+2e-正极：2AgCl(s)+2e-=2Ag(s)+2Cl-(m=0.555*2mol.kg-1)总：Zn(s)+2AgCl(s)=ZnCl2(m=0.555mol.kg-1)+2Ag(s)第6题：负极：Cu(s)=Cu2+(m=0.1mol.kg-1)+2e-正极：2AgAc(s)+2e-=2Ag(s)+2Ac-(m=0.1*2mol.kg-1)总：Cu(s)+2AgAc(s)=CuAc2(m=0.1mol.kg-1)+2Ag(s)AgAc=Ag+Ac-负极：Ag=Ag+e-正极：AgAc+e-=Ag+Ac-第7题：负极：Cd(s)=Cd2+2e-正极：Cu2+2e-=Cu总：Cd(s)+Cu2+=Cd2+Cu第8题：Zn(s)/ZnSO4(aq)/H2SO4(aq)/H2(p)/ptAg(s)/Agcl(s)/cl-(acl-)/Ag+(aAg+)/Ag(s)第9题：负极：H2(p)=2H+(m=0.1mol.kg-1,=0.80)+2e-正极：2Agcl(s)+2e-=2Ag(s)+2cl-(m=0.1mol.kg-1=0.80)总：H2(p)+2Agcl(s)=2Ag(s)+2Hcl(m=0.1mol.kg-1,=0.80)负极：Ag+Br-=AgBr+e-正极：Fe3+e-=Fe2+Ag(s)+Br-(a=0.34)+Fe3+(a=0.1)=AgB(s)r+Fe2+(a=0.02)第10题：Zn(s)+Hg2cl2(s)=2Hg(s)+Zn2+(0.005mol.kg-1)+2cl-(0.01mol.kg-1)第11题：Pt/Fe3+(aFe3+,Fe2+(aFe2+)/Ag+(aAg+)/Ag(s)Fe2+Ag+=Fe3+Ag(s) m m 0.05-m第12题：T=298K第13题：1. H2(p）+HgO(s)=Hg(l)+H2O(l)2. H2(p)+1/2O2(p)=H2O(l)1-2HgO(s)=Hg(l)+1/2O2(p)第14题：1. H2（g)+cl2(g)=2Hcl(m)2. 2Ag(s)+CuCl2(m)=Cu(s)+2Agcl(s)3. Cd(s)+2H+(m2)=Cd2+(m1)+H2(g)4. Cd(s)+2AgI(s)=CdI2(m1)+2Ag(s)5. PbCl2(s)+SO42-(m1)=PbSO4(s)+2Cl-6.Ag(s)+1/2Hg2Cl2(s)=AgCl(s)+Hg(l)7.Fe2+1/2Hg22+=Fe3+Hg(l)8.2Hg(l)+Cl2(g)=Hg2Cl2(s)9.Sn(s)+2H+(2m2)=Sn2+(m1)+H2(g)10.H2(g)+HgO(s)=Hg(l)+H2O(l) 第15题： 第16题：负极：H2(p)=2H+(m=0.02mol.kg-1)+2e-正极：1/2O2(p)+2H+(0.02mol.kg-1)+2e-=H2O(l)总：H2(p)+1/2O2(p)=H2O(l)第17题：负极：Zn=Zn2+(a=0.0004)+2e-正极：Cd2+(a=0.2)+2e-=Cd总：Zn+Cd2+(a=0.2)=Zn2+(a=0.0004)+Cd第18题：AgCl(s)=Ag(s)+1/2Cl2(g)第19题：T=298KE=-0.068V第20题：pt/H2(p)/HCl(0.1mol.dm-3)/Agcl(s)/Ag(s)第21题：Pt/H2(p)/HI(a=1)/I2(s)E相同，E与电池本身性质有关，K不同，K与电池表达式写法有关。第22题：负极:Zn(s)=Zn2+(0.01mol.kg-1,=0.38)+2e-正极：PbSO4(s)+2e-=Pb(s)+SO42-Zn(s)+PbSO4(s)=Pb(s)+ZnSO4(0.01mol.kg-1,=0.38)PbSO4=Pb2+SO42-正极：2e-+PbSO4=Pb+SO42-负极：Pb=Pb2+2e-第23题：负极：H2(p)+2OH-(m)=2H2O(l)+2e-正极：HgO(s)+H2O(l+2e-=Hg(l)+2OH-总：H2(p)+HgO(s)=H2O(l)+Hg(l)H+OH-=H2O第24题：负极：Ag(s)+Br-(0.1mol.kg-1)=AgBr(s)+e-正极：H+e-=1/2H2 (0.01P)总：Ag(s)+HBr(0.1mol.kg-1)=AgBr(s)+1/2H2(0.01P)AgBr(s)=Ag+Br-负极：Ag(s)=Ag+e-正极：AgBr+e-=Ag+Br-第25题:H2(p)+1/2O2(p)=H2O(l)