基础化学实验(一)习题及答案十二

(216)()1ABCD()2ABCD()3pHpHApHBpHCpHDpH()4.Fe2+A.NH4NCSB.K3[Fe(CN)6]C.K4[Fe(CN)6]D.H2S()5.Cr(VI)A.Cr3+;B.CrO42-;C.CrO3;D.Cr2O72-()6.,A.B.C.D.()7.pHA.4B.4.2C.4.27D.4.275()8.A.B.C.D.(250.5)1.________________________________2.;;;;___________AgNO3KMnO4___________________________________3.24.MnO2Fe(OH)3(4)56ABCDEKNH4AgBa2Al3ClBrCO32SO42NO3AB→↓AC→↓AD→↓BC→↓+↑ABCDEpH7()ABCDE7ABBCCFeSO4KSCNABCABC8ClCO32OH3(1)()(2)()(3)()9.,:(1)(2)(3)()(4)()10.g(10)101.Mn2+MnO4-Mn2+3362.A1H2ONH4C1Na2CO3439()6281NaCl42BaCl2Na2CO3CO32-43BaCl2Na2CO3BaSO4Na2CO3BaSO4BaCO3KSPBaSO4=1.1×10-10KSPBaCO3=5.1×10-984.??45SO42-Ca2+Mg2+Ba2+CO32-()“”46BaCl2Na2CO34()CO2111CO252CO26(216)1D2C3C4.B5.D6.A7.C8.B(250.5)1.K2Cr2O72.()3.4.Na2S2O3Na2S2O35.(NO2)6.ABaCl2BNa2CO3C(NH4)2SO4DAgNO3EKBr7.ANH3BNOCHNO38(1)OHCO32Ba(NO3)2(2)CO32OHHNO3(3)ClAgNO39.(1)NaOH;CuSO4;CaCl2;PCl5;MgCl2;P2O5;Na2CO3;AlCl3(2)AgNO3;Hg2Cl2;AgBr;AgCl;HClO;KMnO4(3)()KCN;P4As2O3(4)()Cl2;H2;CH4;K;Na;AgN310.0.0001g(10)1.KClNa2SO4CuCl2KMnO4Na2CO3NH4NO3(6)1CuCl2(3)2PHKClNa2SO4BaCl2Na2SO4KCl(3)3PHNa2CO3HClNa2CO3PHNH4NO3()NH4NO3(4)101.Mn2+MnO4-Mn2+3362MnO4-+3Mn2++2H2O=5MnO2↓+4H+MnO2+4HCl()=MnCl2+Cl2+2H2O2MnO2+2H2SO4()=2MnSO4+O2+2H2O2.A1H2ONH4C1Na2CO34Al2O3A1H2ONH4C1Na2CO3A1H2NH4C1+H2O=NH3H2O+HCl2A1+6HCl=2A1Cl3+3H2Na2CO3+H2O=NaHCO3+NaOH2A1+2NaOH+2H2O=2NaA1O2+3H239()6281NaCl4SO42-Ca2+Mg2+2BaCl2Na2CO3CO32-4BaCl2SO42-Na2CO3Ca2+Mg2+Ba2+CO32-HClCO2Na2+Cl-NaCl3BaCl2Na2CO3BaSO4Na2CO3BaSO4BaCO3KSPBaSO4=1.1×10-10KSPBaCO3=5.1×10-98BaCl2SO42-Ba2+Na2CO3Na2CO3Ca2+Mg2+BaCl2SO42-Ba2+BaSO4Na2CO3Na2CO3BaSO4BaCO3BaSO4+Na2CO3=BaCO3↓+Na2SO4Na2CO3KSPBaCO3≈50KSPBaSO4,[CO32-]50[SO42-],BaS04BaC03.4.??4NaCl[Ba2+][SO42-]=KSPBa2+5SO42-Ca2+Mg2+Ba2+CO32-()“”4KClNaClK+6BaCl2Na2CO34()CO2111CO25CO22CO26CaSO4HClCO2.CaCl2.,,